If you have Zoneminder installed and you're seeing this in /var/log/syslog:
Nov 6 14:36:11 machine zmwatch: ERR [Shared data size conflict in shared_data for monitor monitor, expected 328, got 316]
It's probably because of a bug that's been patched. On my distribution (Ubuntu 11.10) the file Memory.pm is at
and the patch in question was applied at line 130.