If you have the 2802W V2 card youre in for some work.
Firstly, the prism54 driver doesnt work with the V2 card, so remove it.
Next, go find a kernel thats been compiled with 8k stacks
Then download ndiswappers ( dont use v0.8, it panics, rather use V0.7 ) and install that.
Your card will now be wlon0 instead of ethx.
Oh, and youre also gonna need the XP drivers of this card, YES XP. Ndiswapper uses the windows drivers and then wraps then so they can be used on linux.
This card caused me days of grief unitil i found out about ndiswapper. Now she works like a charm.