[Twisted-Python] Different behavior under Windos and Linux

[W K]

Hello all, 

i'll be short. The application was developed, which sends streams to different nodes using TCP (basic.LineReceiver and ClientFactory were used) It works perfectly under WindowsXP. However, under (K)Ubuntu the data is not sent immediately, but after approximately 20 secs delay! Does anyone encounter similar inconsistencies? How can one tune the parameters responsible for buffering?

Thanks