The symptoms do not occur on every resume from hibernate, it may be the 3rd or 4th resume. It has not happened on resumes from suspend to ram. I have entered a bug report here:
It seems to have something to do with glibc libraries as errors in /var/log/messages indicate:
Nov 14 07:11:11 t400jbk kernel: Restarting tasks ... <6>hald: segfault at 2 ip 0000003a13a717fe sp 00007ffffe08d9f0 error 4 in libc-2.10.1.so[3a13a00000+164000]
Nov 14 07:11:11 t400jbk kernel: hald-addon-acpi: segfault at 66 ip 0000003a13a717fe sp 00007ffff47e5530 error 4 in libc-2.10.1.so[3a13a00000+164000]
Please take a look at the bug if you are experiencing the problem with recent Lenovo thinkpads and add to it.