I had the problem with the rightclick button from my mouse on my Acer
1363 WLMI laptop.
Oh what bad. After a long research I find out that "nvshell.dll" in
c:\windwos\system32 caused all the trouble. Almost I thought to make a
clean install.
You can't read much about this kind of trouble on the Internet but it
is a verry nasty problem.

With "Shellexview" (downloaded on the Internet) I disabled the
nvshell.dll option.
This file from nvvidea is no good but I don't know have to replace it.