the fault lies with a wooden driver. to have the right driver, and surf the cleat (100% signal, and 144Mbs) that really works, follow the simple indacations this site: there are only few copy / paste to do.
pvaret / fixed-rtl8192cu
roxe after that!
this module has a much more powerful and stable signal that built my laptop under lubuntu, or the son of my pci xp. 7 under the install is done alone by win update. XP CD delivered works well, and for linux, you have the procedure.
if I break it, well, he did not look so fragile as this, I bought the same.