Im having the same issue, having flashed the tablet and installed

Kasty-Ez

then going back to the original drivers from the arnova site

then back to Kasty..

but to no avail, it wasnt working when i got it this morning, as in it wasnt even booting past the archos screen..

but now my only issue is this wifi issue, i am tempted to say it must be a hardware fault, anyone have experience of opening these little puppies up?

AH