I have three Personal Computers and two of them works with wifi n adapters.
one has Windows vista 32bits on it and the two others Windows 7 64bits.

The two P.C. with wifi n (one vista and one windows 7 64bits) can't work with zone alarm internet security suite installed.
the third p.C. with cord network and windows 7 64bits works fine.

If I put a cord network in place of the adapter wifi n on all the P.C. they work fine.