Just to demonstrate..
 
I go on the BBC Weather site and type in an area just south of me;
 

 
No problem.  Then I change the location to the one I had open last night;
 

..and get this;
 

 
 
 
 

Sorry, I'm still chuckling at the redundancy of the term "Strange internet behaviour." 

Might just try and unplug the router and plug it back in to restart it.
(or perhaps the link went bad because you were hooked up to it when it went out and you have not cleared your history and the same page is coming up although now it is fixed - delete your browser history - because to make sites come up faster if it has not changed (especially in IE although Firefox may be the same) it will load the old page instead of loading up the new page now - check your browser to see how it is set).
 
 

spacealf
- delete your browser history -
 

 
That sorted it, thanks Alf!

 
NagBap werking again?

Sounds like a DNS table got its knickers in a twist

Ya, Thanks. Here is another thing to do though (sometimes not so bad, sometimes I wonder where it all came from).
 
Right click on Computer and "Open" it on the menu items. Right click on your "C:\" drive and and select "Properties".
 
When the "General" tab screen comes up, click on "Disk Cleanup"!
 
The other day I had to re-install IE so when going to Windows Update it wanted to upgrade it to IE 10 instead of having IE9. (if it wasn't needed for some Fender Amp program I would have left it un-installed!)
 
But anyway, I had downloaded something like 52mB, or not all that much, later I went back and thought I do the "Disk Cleanup" and for some reason (I really have not figured this out yet) I had 326mB of Window Update Temp files like that are not needed on the hard disk. Just delete the main checkboxes it has checked there and you may find a lot of files not needed anymore on your C:\ partition of your harddisk!
(might give it a day or so before you do it after a Windows Update or any Temp files left by browsers or something like that)
 
I have no idea where all those files came from.
??
I scratch my head at Windows 7 as I find out more about it. It is like a pack rat and stores stuff and don't delete it until you find out about it.
 
Revo Installer 2.5 9 free version does not even find all that stuff, yet it finds other stuff left on the computer from Windows 7 *.dmp files (dump files) or whatever browsers are keeping on the computer.
 
I just delete History in any browser every day anymore.
??
Of course what anyone does is up to them.
 
More like strange computer behavior!
(and also programs may not completely un-install theirselves, which Revo may find perhaps).
They leave all this crap and stuff on your computer sometimes.
Bad programs, bad computer, bad, bad, bad (in my opinion).
 

jamesg1213
Tried Firefox, but still said 'no internet connection'
ISP texted me to say they had done checks and now no fault on the local network.
Tried Internet Explorer, and got online.
Tried Firefox again, got online this time.

Whenever you get a message like that under these circumstances, hit F5. Likely, what's going on is Firefox believes it's supposed to be in offline mode and is pulling up cached pages rather than live ones.
 
Two ways you can deal with it (if this actually is what's going on):
1) clear your cache and check your offline/online status (File menu, Work Offline should be visible)
2) reboot
 
Never overestimate how much a reboot can fix.

For most browsers, Ctrl+F5 (or Shift+F5) forces a page to reload without checking its cache.

The same thing happened to me about a year ago. Some sites would load perfectly, others not at all. I called Time Warner Cable and got nowhere until I demanded to speak to a REAL technician. So they actually put me through to one. Turned out it was DNS related, and the problem was completely solved by going into my internet options and changing my network settings to use Google Public DNS. You can read how to do it here:
 
https://developers.google.../public-dns/docs/using