squid 1.NOVM.19 hanging

Almost daily now during peak time, our squid proxy dies. It just stops
answering TCP connections.

Could this be related to a shortage file descriptors (in which case we would
have to recompile the kernel) or is this a general bug? (In which case we
would reinstall 1.1.19 and watch squid eat memory)

Nothing is logged, it just doesn't work anymore. We are getting about 12000
connections/hour during peak time. (according to cachemgr)

Any suggestions?

-- 
Lars Marowsky-Bree  :homepage email: \ geek, BOFH, psychopath, magician, /
 http://teuto.net/~lmb/ lmb@teuto.net \ killer, looney, genius, pervert /
pgp-key-id: 0x09e360c5 / ff 2a 82 e8 6b 85 79 23 9c da b5 81 d4 fc 29 e6
        < to prevent forgery, all email by me is signed with PGP >