It looks like there is now a fix for the stall problem that some users have reported with their Prius.

Story from MSNBC.

DETROIT - Toyota Motor Corp. said Thursday it will notify about 75,000 Prius owners in the United States about a potential software glitch that may cause the popular hybrid cars to suddenly stall or shut down.

http://www.msnbc.msn.com/id/9686049/