Perhaps I'm just lucky, but I never had any serious problems with any new poserrelease.
I tried the poserpro2010 beta , but the only bug I could find were some issues when MS Outlook was open.
I still have to find all the eastereggs, but so far I'm really satisfied with the new poserpro release. The library is fantastic, and rendering is very fast and accurate.

best regards,

Bopper.

-How can you improve things when you don't make mistakes?