Hey yall

I have an unlocked 9530 with tmobile. everything works great. web, mms, gps. i have problems with loosing my edge when i try to run Slacker. Also I am trying to try TetherBerry. Same issue. I loose my edge when i start the program.
Is there a network setting maybe is wrong? any one have experience like mine? Any help would be appreciated. I like slacker but loose my edge. i want to tether but loose my edge. all other apps work great, viigo, myspace, messenger, whatever app i have works great, but slacker and tetherberry.
THanks