Hi Beep,
Although I would say that X1, with its d patch, was pretty stable for me, and X2 has crashed a couple of times over the weekend, this does not phase me at all. As John has said, for a first release, X2 is a pretty good piece of software.
I reckon that over the last three days it has gone through the mill with loads of peeps here pushing it to the limits with hundreds of different soft synths and effects, so I think the number of glitches coming to the surface is to be expected, in my opinion.
And X1 is still working fine for me, by the way.