You've got a few things working against you here. Your system is a little underpowered but with some system tweaks, using the track freeze function and increasing your latency when not tracking you should be able to get X2 working a little better.
 
Next you are using third party plugs which can be problematic even on the best of systems. Contact Cake to see if there are any known issues with the plugins you are using and if they have any solutions for you.
 
Third you are using 32 bit plugs on 64 bit OS and Sonar install which again can be problematic at the best of times. You have already discovered Jbridge but that still isn't as good as just using a 64 bit plug. Go to all the websites for the plugs you use and see if they have 64 bit versions. Many will have them offered free to existing users. Ones that don't and aren't cooperate then either find a suitable 64 bit alternative or switch to X1, apply the effect then render the track and import it back into the X2 project.
 
There is also the issue that has already been brought up. You are seriously lacking in RAM and your 64 bit OS and Sonar install is pointless with under 4GB. If you can get another 6GB of RAM onto your system you should do it (probably best to buy 8GB of the same kind instead of trying to match up to your existing RAM... RAM is not very expensive). If you can afford new RAM or there is something preventing from installing some and you still want to use your 32bit plugs you might as well switch to Win7 32 bit if you already have it or Win 32. However I'm not sure if that would mean you'd have to buy another copy of windows. If so that's a pretty expensive solution just to use some old plugs. I'm not sure whether Win8 is more resource intensive either but you may want to look into that because between that and Sonar it may be sinking your system and 7 may work better... but I really don't know. Also your sig says you are on on the Prerelease version of Win8. If that is the case they have done a lot of patches. You should probably get the most up to date version of whatever OS you are using.
 
X2 has it's problems but you should be able to get it to work without crashing all the time on your system if you are smart about it. It's worth it even if you have to go back to X1 to perform specific tasks every now and again.

Well that is true, but of course i have plugins that i use mostly is 64 bit plugins
there's just a few plugins that is 32 bit.
I see no reason to install Sonar as 32 bit ? and install all the others as 32bit !

Anyway the problem is Bitbridge itself, and the solution to that is just using JBridge.

other than that Sonar is working great.

Yes and yes... i may have to get some more memory for my computer.

There is no advantage to using 64bit plug-ins in 2GB of RAM either. The 32bit versions would run just as well, if not better. As has been suggested, the hardware, OS and DAW are a bad match. The least cost solution to the best configuration given the available hardware/OS would be to run everything 32bit.

You kill me Beep! 

Discussing plugins is good , but will not always come to a solution for everyone.
One person may like waves plugins, another would not..

You say that :
Those who dismiss them generally don't have a clue about good plugins !

I do not agree there, it all comes to the taste and how you hear the sound is processed
and what you are able to listen for.
Also the knowledge how to use em, and what to adjust to get a better result.
If you don't know how to use an EQ, and what to listen for, any EQ would do anyway.
the same goes for Compressors etc.

That is why i am still is searching for EQ and Compressors mainly from
the same company if possible, and of course as 64 bit plugs.
When i do find an EQ i like and a Compressor or two, ill be satisfied
and ditch the 32 bit ones.

And the next DAW will be X3 of course, but only when i have the cash for it
and it is stable.

then i do not have to worry about Bitridge or Jbridge.

Yes over the years members have done extensive tests on them and they have always faired well. I have a fair amount of free plugins but the vast majority are from well known developers that provide them to entice one to buy their paid for plugins. Its a way to advertise without being blatant about it. But I wont compromise my system to run 32 bit free plugins when there so many 64 bit ones out there. Then I am a strong user of PC modules which in a lot of cases replace plugins that may cost a lot more. 
 
The only plugin from CW that I have very little respect for is Boost 11. It was not meant for Sonar Producer but members demanded it to be included and CW did include it.
 
CW has always tried to provide quality plugins for its flagship DAW.  Most new members are under the impression that because these plugins are given away they must be second rate. That is a mistake. 
 
I have use a number of DAWs through the years and no other DAW comes with the plugins of comparable quality. Not Logic not Cubase and certainly not Reaper. 
 
The Sonitus ones are unique in that they are quite capable of emulating many other types of well known hardware FX.  Or they can be transparent. However one has to experiment with them to know this. 
 
In the end though what Beepster and Scook posted is more to the point and should be taken very seriously. 
 
You need a stable system to get the most out of what you already have. 
 
Up your RAM to at least 8 GB and I think a lot of you troubles will fade into the past. 
 
 
 
   

I don't get why Soundblend would run any 64 bit plugs at all, let alone switch the last remaining 32 bit ones to 64. Unless you're getting the extra RAM. With 2GB, there is literally no point and it creates extra load on our system to use the Bitbridge. Not to mention you create extra possibilities for instability. You can easily install Sonar 32 bit on 64 bit Windows.

Beepster

Sanderxpander
. You can easily install Sonar 32 bit on 64 bit Windows.

Does this introduce any stability issues itself? Because that would indeed be the best solution without have to drop a single penny.

No. As a matter of fact, it will be MORE stable given the HW/OS combination. That is why several have recommended it in this thread.

No instability issues at all. Most apps you run on Windows are 32 bit, even if your Windows is 64. Or used to be, it's slowly switching now. The exception is drivers, you always need the matching drivers.

No Beep. In fact it provides a greater degree of protection because it will run in a 4 GB memory allocation that is protected. But one needs at least 8 GB. 
 

Beepster
1 : Oh and CRANK UP YOUR BUFFERS while mixing. As high as they'll go if need be. The more time you allow your system to process the effects the less likely it is you are going to have dropouts/crashes.
 
2: A good way to keep an eye on these things is to insert the Performance Module into the Control Bar (right click the Control Bar and select Performance Module until it appears). You see exactly how much CPU and Ram power is being used up by what. If it starts maxing out up your buffers and/or start freezing some tracks and/or archiving tracks you don't need for what you are doing.
 
 
3: When are tools are limited we use our minds to make those tools do what we need them to. Think back to the Beatles or any number of great old school bands who put out amazing productions with only a four track and some ingenuity at their disposal.
 

answers !

1 : Yes i always crank my buffers up while mixing, that's the way i do

2: Mhh cant quite agree on that one, if u need the real performance use  use CTRL / ALT / DEL
and bring up the resource monitor, that is far more reliable, cause the " monitor "
of the CPU / etc in Sonar hang's a bit after and can't be trusted ! just what i have noticed.

3: In those good old day's the pretty much make'd the music as you say with very few
tracks , and the music still sounds good.
today many of us use 10-50 tracks in the production, will that make any song better ? no i don't think so
we should try to go down to 4-8 tracks again and see what we can get out of that
like in the old days of recording.

How come that there's so many great songs, recorded with just few tracks.
Maybe today's producers is way to technical, and have " forgotten " how to make music
like from the 60's to the 80's !
 

"2: Mhh cant quite agree on that one, if u need the real performance use use CTRL / ALT / DEL
and bring up the resource monitor, that is far more reliable, cause the " monitor "
of the CPU / etc in Sonar hang's a bit after and can't be trusted ! just what i have noticed."
 
No not really the one in Sonar is for Sonar and is more accurate for Sonar. It measures buffers and how quickly the will empty. This is more useful for predicting drop outs.
 
The system monitor is an over view and can be totally inaccurate in predicting drop outs.   

Oh and the thing is the Task Manager actually sucks up resources itself. It may be more accurate than the Sonar Performance Module but if you look at the processes you will see that Task Manager is indeed using extra resources. You don't need a hyper accurate readout. You just need to see if you are getting close to a max out as you add things. If you get even CLOSE to maxing anything it's time to start figuring out ways to free up resources.
 
 
 

X2 has very rarely crashed on me and when it has I was able to reopen Sonar almost immediately. X1 crashed more and took longer to recover. X2 however does more weird stuff in general than X1 while I work.
 
So take that as you will but it's probably moot as my system is very different than yours so it's not really a fair comparison. My problems are truly issues with the program and/or OS/system config. Not hardware limitations.