I just upgraded the Wifi cards in 2 of my laptops from Intel 4965AGNs to Intel wifi 5300s which I bought off Ebay, and after experiencing problems I noticed that both cards have the same MAC address. Both cards appear to be ok when only one of the laptops is on, but I obviously have problems...
The router's on all the time so I haven't noticed how long after powering on it start to show problems - It just has problems all the time. It's generally used pretty lightly for web surfing by the 2 laptops with 4965AGN wireless cards on 5GHz draft N. It would frequently drop the connection...
My disconnect problems seem to be fixed...
I've been having so many disconnect problems with my 610, that I was just about ready to throw it in the trash. The primary reason I bought the 610 was to enable higher speed access to my NAS, but the connection would always drop as soon as I attempted...