Odd trouble with Filezilla 0.9.33 Server

[Hayzar]

Heres an odd one.

After having the server run for awhile it will stop looking for connections
(still trying to workout a timeframe for how long)

Odd part #1 - On another machine it works with no problems

Odd part #2 - The only machine and the only server program that has this glitch

The only way to get around the problem is to shut down the server and bring it back up

On said machine in question a time/mail & a echolink proxy server program run without
any issue and sometimes an temp telnet server as well

P.s. said problem started with 0.9.33

-Hayzar (U.E.C.S.G.)