With my Dell E6410 S3 suspend fails with 2.6.35-25-generic also:
$ uname -srvmo Linux 2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44 UTC 2011 x86_64 GNU/Linux
S3 suspend tries but immediately wakes.
With my Dell E6410 S3 suspend fails with 2.6.35-25-generic also:
$ uname -srvmo
Linux 2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44 UTC 2011 x86_64 GNU/Linux
S3 suspend tries but immediately wakes.