I've been having problems with my laptop loosing connection with my AP. The distance between the two is less than 20' with a clear line of sight. The thing is, it and the cable modem are setting on the floor near the wall. Its a concrete floor.

Is this a less than optimum placment, setting on the floor?

For what its worth it's a linksys wrt54gs running Satori 4.0 firmware. The laptop has an intel pro/wireless 2200bg setup.