I have some iBooks and MacBooks running 10.4 or 10.5 that all of a sudden have started receiving the following message: "The wireless network appears to have been compromised and will be disabled for about a minute". The user then can only reselect the network to get reconnected. But the problem will come up after 10 minutes or 1 hour. The wireless network is not compromised. The wireless Access Points are Proxim brand AP-700s running WPA for security. I have MacBooks running 10.7 and Windows XP/7 laptops connecting without any issues. Based on a quick Google search, it appears that this is a glitch or some unresolved error in the Airport card driver or software. Has anybody seen this message and/or suggest a fix?