After June Raspbmc's update, my TP-LINK WN725N V2 which I manage to make it work on my Pi previously failed to work even though it's claimed to be supported by this update. So in order to fix that, I've recompile the module by myself this time. Here are few notes on how to compile driver for TP-LINK WN725N V2 in case the next update still fail to support this device.
Edit: After September update, Raspbmc no longer use kernel 3.6.11, so check out the latest guide to compile for kernel 3.10.13 by Stm labs forum user Rodi here. The .ko file also provided. I've mirrored it in my other post.
Grab the compiled kernel module from