Some additional info: Dapper still crashes after a while. The difference with Edgy is that Dapper is actually behaving normally before it crashes. I tried the Dapper kernel on Edgy, and it works better -- about the same as normal Dapper -- so it's probably a kernel bug. I also tried FC6 (2.6.18 kernel), which behaves about the same (weird X bugs) as Edgy. Still running 32-bit Edgy, which is still mostly fine (no bug making it unusable).
-- Bug on amd64 makes X server unusable in Edgy (CRITICAL) https://launchpad.net/bugs/66500 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs