Hi, had this problem both in Karmic and in Lucid Alpha 3. After being connected to a AP in like 3-5 hours, i just suddenly lose the connection. I don't know if this is relevant, but i had, for a short time, two APs with the same name(not the same channel) close to each other. This info is maybe irrelevant, but i think its after this I suddenly get kicked of the network. When i loose the connection, i have to restart the machine to get it going again.



Lenovo thinkpad t500
Ubuntu Lucid Alpha 3(had it in Karmic too)