tcpip stops working after some time

[Micha Feigin <michf@post.tau.ac.il>]

For some reason after a few days of uptime , tcp stops working on my machine.
Ping and dns lookups work, tcp doesn't. I tried both wired and wireless,
removing the firewall and unloading all firewall related modules but nothing
seems to change.

Only restarting seems to help

Any ideas what else could it be?

Thanks