Network problem under heavy load.

Can anybody help with network problem, I've got a laptop with a Psion Gold Card Netglobal 56K+10/100Mb cardbus card, 2.2.17 kernel,debian 2.2, PCMCIA 3.1.20. At bootup everything is OK, the network is up and I can ping my server, FTP, telnet... all seems fine. But network fails and hangs with err

Network problem under heavy load.

Can anybody help with network problem, I've got a laptop with a Psion Gold Card Netglobal 56K+10/100Mb cardbus card, 2.2.17 kernel,debian 2.2, PCMCIA 3.1.20. At bootup everything is OK, the network is up and I can ping my server, FTP, telnet... all seems fine. But network fails and hangs with er