pop3d 100% cpu

[Faust]

About 5 to 10 minutes after starting cyrus_imapd the process pop3d will 
take
100% cpu usage and the system will freece.

Anyone else has seen this problem?

I am using fedora 8 with the following packages;

cyrus-sasl-plain-2.1.22-6
cyrus-imapd-utils-2.3.9-7.fc7
cyrus-sasl-lib-2.1.22-6
cyrus-sasl-md5-2.1.22-6
cyrus-imapd-perl-2.3.9-7.fc7
cyrus-imapd-2.3.9-7.fc7
cyrus-sasl-2.1.22-6


Faust