intermittent segfaults, and weird messages in the error log

I've been getting intermittent segfaults for a couple of days now on =20
our dev server, and i'm not really sure why. I can more or less =20
reproduce them, but it's a hit or miss process. It only seems to =20
affect 2 handlers for some reason, and based on what i'm seeing it =20
seems like one is some how managing to corrupt the childs =20
configuration, then the other is making it segfault.

Here are some examples of the weird messages i'm seeing in the error =20
log. ZZZ::AuthSmb is a simple auth handler we've been using for years =20
without any issues. The random corruption of the name is what makes =20
me thing that the config is getting corrupted, but i don't really know =20
what i'm talking about.

[Tue Aug 12 09:39:06 2008] [error] lookup of 'ZZZ::AuthzSmb::8 ed
[Tue Aug 12 10:01:53 2008] [error] lookup of 'ZZZ::AuthzSmb::`' failed
[Tue Aug 12 10:05:11 2008] [error] lookup of '@\xa5J\bP\xa5J\bRESU' failed
[Tue Aug 12 10:05:52 2008] [error] lookup of '@\xa5J\bP\xa5J\bRESU' failed
[Tue Aug 12 16:13:57 2008] [error] lookup of 'ZZZ::AuthzSmb' failed
[Tue Aug 12 16:15:10 2008] [error] lookup of 'ZZZ::AuthzSmb' failed
[Tue Aug 12 16:15:17 2008] [error] lookup of 'ZZZ::AuthzSmb' failed
[Tue Aug 12 16:15:19 2008] [error] lookup of 'ZZZ::\xf8w\v\n\x0c' failed
[Tue Aug 12 16:31:36 2008] [error] lookup of 'ZZZ::AuthzSmb`\x89' failed
[Tue Aug 12 16:55:34 2008] [error] lookup of 'ZZZ::AuthzSmb\xf8\xde' failed
[Tue Aug 12 16:55:47 2008] [error] lookup of 'ZZZ::AuthzSmbX@' failed
[Tue Aug 12 17:24:32 2008] [error] lookup of 'h\xfd\xfa\t' failed

here's the backtrace or a core file with MP_DEBUG=3D1. Any help would =20
be appreciated, i'm at a loss.

(gdb) bt full
#0 0xb7d618cb in modperl_mgv_as_string (symbol=3D0x9fadc28, =20
p=3D0x9fae240, package=3D0)
at modperl_mgv.c:393
string =3D 0x9fadc28 "\002"
ptr =3D 0x0
mgv =3D (modperl_mgv_t *) 0x2
len =3D 2
#1 0xb7d56b21 in modperl_callback (handler=3D0x85146c0, p=3D0x9fae240, =20
r=3D0x9fae280, s=3D0x8504330,
args=3D0xa104b04) at modperl_callback.c:85
name =3D 0x11