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I have some 1242 AP's set up with Cisco Fast roaming. My 3945 clients roam fine, but after a few seconds, they lose their IP address. If I have a constant ping going, my ping will drop for about 3 seconds, then replys will go for about 4 seconds. ...
I was getting the same error. I see that there is an updated PDM, ver 3.0(3) that was released on April 13th. I tested it on a spare pix and the PDM worked fine with Java JRE 5.0.