static ip address problem

[freeza]

I have my wifi network set up with static ip addresses and mac address filtering. Here is the problem. My EVO will connect to the network just fine when i'm not in a call, and it will stay connected as long as I enable wifi before a call comes through, but if I try and connect to the network by enabling the wifi adapter after i'm on a call, it doesn't work. Wifi will turn on, but my network will always say "not in range, remembered", however, other networks show up fine. I'm not sure if any of them can be connected though, as I don't have access to them.

Any one else experiencing this issue?

Stock ROM, unrevoked root.