Mouse freezing on HP NC6000

I'm having a recurring problem that's driving me nuts. I have an HP
NC6000, and every so often the mouse will freeze -- totally lock up.
This only happens when I am at home and connected to my home network
(secured wireless) -- but it doesn't always happen. When it happens, I
must reboot -- usually I have to shut down and start up again after a
few minutes, as a simple restart doesn't always work.

I have updated my driver to version 7.12.7.0, but that doesn't seem to
help. Anyone have any suggestions?

Thanks in advance!

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