[squid-users] Fwd: chroot,Open UDP port & big CPU time

I'm using Squid squid-2.5.STABLE2 on linux 2.4.20 in config there's an
option to chroot, I'v set all directories everything that needs, squid is
starting properly and all except one thread has user nobody

root 3670 0.0 0.4 3716 1128 ? S Apr15 0:00
/usr/local/squid/sbin/squid
nobody 12422 0.0 2.6 8556 6816 ? S Apr15 0:06 [squid]
nobody 29142 99.7 0.5 3988 1296 ? R Apr15 1013:49 [squid]

Can this process drop priviliges too ?

Other thing you can see CPU usage, one of threads takes whole CPU time,
and other thread open's udp port on external interface

tcp 0 0 192.168.0.1:3128 0.0.0.0:* LISTEN
     12422/
tcp 0 0 192.168.0.1:1022 0.0.0.0:* LISTEN
     20427/sshd
tcp 0 248 192.168.0.1:1022 192.168.0.24:1030
ESTABLISHED 20518/1
udp 0 0 0.0.0.0:32812 0.0.0.0:*
     12422/
udp 0 0 0.0.0.0:67 0.0.0.0:*
     -

can that be exploited hole ?
That happends when squid runs about 2 to 6 hours. It works fine but
utilizes CPU time.

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Pozdraviam
Przemyslaw Borkowski