No real problems here with the 2.0 viewer. It has been ages since I crashed (that has been different in the past).
I am running SL on a i7 desktop with Windows 7 64bit, 8mb memory and on a wired 120mb/10mb connection. I know that is not a typical low end configuration.
Only annoyance I have is that old "hair on your butt" is back (but then again, detach your hair and wear it again... all is good again).
Edit: LOL... I just noticed that I seem to be a "new resident". True, it has been ages since I posted on the SL forums, but I am around since December 2005