strange delays in connecting to POP3 server

[Kamijo]

Igor Belikov skrev:
> Hello info-cyrus,
> 
>   I'm migrate mail server to new hardware under new OS. Migration was
>   from cyrus 2.2.12 + sasl 2.1.20 under SuSE Linux v9.1 (kernel
>   2.6.15.4-smp) to cyrus 2.3.3 + sasl 2.1.21 under SuSE Linux 10.0 OSS
>   (original kernel from SuSE).
> 
>   In both cases cyrus compiled from sources, in both cases was applied
>   two patches (patch that allow to store crypted passwords and patch
>   that allow 8bit headers).
> 
>   In new installation our clients notice large delays during
>   connection to POP3 server. This delays appears accidentally, without
>   any system.
> 

Do you have any other delays on that SuSE-server? I mean delays that are 
related to any of the other network services on the server.

//Kamijo