Oh dear not to good steell...
Tiscal are not so p2p user friendly and they will block your bandwidth at certain times of the day, they call them their peak times and they can range from 5pm until midnight and even longer in some cases...
::. Kitz - ISP Caps, FUPs and Prices .:: ::. Kitz - "Unlimited ISPs" .::
You could try changing your listening port number to something between 49152 up to 65535, try this one 64049....
Go to Tools > Options > Advanced > Firewall...