4.1.12 broken

[raphidae]

I upgraded a server from 4.1.10 to 4.1.12 today and it completely broke php and the web console.

All php scripts result in 503, as does accessing the web console.

there are numerous unhelpful errors in stderr.log:

2012-04-05 23:18:03.006 [STDERR] lscgid: recv_fd() failed: No such file or directory
2012-04-05 23:18:03.007 [STDERR] lscgid: recv_fd() failed: No such file or directory
2012-04-05 23:18:14.947 [STDERR] lscgid: recv_fd() failed: No such file or directory

and some more in my admin error log:

2012-04-05 23:15:25.057 [INFO] [xx.44.172.93:54313-0#_AdminVHost] ExtConn timed out while processing.
2012-04-05 23:15:25.057 [INFO] [xx.44.172.93:54313-0#_AdminVHost] connection to [/tmp/lshttpd/admin_php.sock] on request #0, confirmed, 0, associated process: 1952543827, running: 0, error: Operation timed out!
2012-04-05 23:15:25.057 [NOTICE] [xx.44.172.93:54313-0#_AdminVHost] Suspicious request timeout, associated process: 1952543827, running: 0.

Reverting to 4.1.10 solved all problems instantly.

Additionally, since upgrading I've noticed a new file: /tmp/secret/lscgid.sock

I can't find any references to this file in any of the config files, so I'm unsure of the purpose. Other servers that still run 4.1.10 don't have this file.

I tried deleting it, but that results in:

stderr.log:2012-04-05 23:40:58.785 [STDERR] lscgid: failed to open secret file: /tmp/secret/lscgid.sock.724!
stderr.log:lscgid: secret is not set properly!

Reverting back to 4.1.10 did not remove the need for this file for some reason.