My MBP and Buffalo wifi router

[kap]

Why is that our 2008-9 15" MBP requiring to be reconfigured and our wifi Buffalo router rebooted once a month in order to connect? Our other laptops, Ubuntu 11x IBM and 1GHz DVI 12" G4 MacBook have no problem whatsoever.

[space-time]

something you can try: delete all WiFi entries from keychain (look into System, Login, etc., in other words ALL KEYCHAINS) and they a new connection, report back in 1-2 months