We are running CentOS 6.3 64-bit on VMWare ESXi 5.1 (would have to check for the patchlevel).
I recognized some oddities on the lags when searching for things:
These messages came up after initial installation of 8.0 when it was working fine, but before a reboot (I think) indeed. I have no idea wether this is related nor wether these error messages would reoccur whenever opendkim starts again.
./messages-20121007:Oct 4 15:56:22 draven kernel: opendkim: segfault at 1f0 ip 000000369b009220 sp 00007fff1ecfd7c8 error 4 in libpthread-2.12.so[369b000000+17000]
./messages-20121007:Oct 5 12:16:13 draven kernel: opendkim: segfault at 1f0 ip 000000369b009220 sp 00007fffcd4afb78 error 4 in libpthread-2.12.so[369b000000+17000]