I have searched and cant seem to find an issue matching mine exactly? Iphone 4, 4.2.1, 03.10.01, jailbroke redsnow 9.6rc8 tethered. Will connect to my home wireless network, but will randomly drop the connection. Ipods and other stock iphone hold the connection normally. Is there a fix for this? It will show the DNS and Seach domains tabs under DHCP settings but no IP, Sub, or Router info? Just did it now, connected... started typing here and now it is dropped?

Seems to be isolated the the jailbroken phone only... as all other devices (including this mac im typing on) pickup and hold the connection

I can click my home network, turn wifi off and back on and it will not reconnect on its own either....

UPDATE: I tried a restart of the device... obviously having to "boot tethered" and this seems to have fixed the problem!