Anyone seen these errors from apache before?

*** glibc detected *** free(): invalid next size (fast): 0x0a2e4320 ***
*** glibc detected *** free(): invalid next size (fast): 0x0a2e2068 ***
[Mon Sep 19 13:29:48 2005] [notice] child pid 334 exit signal Aborted (6)
[Mon Sep 19 13:29:48 2005] [notice] child pid 335 exit signal Aborted (6)

This is CentOS 4.1 with all updates applied. Happens when trying to log on to the latest egroupware from cvs (from head).

Regards,
Harald