very weird thing with trackpad

[Shahara9 at aol.com]

Now, this has happened twice...
My house is really dry (since its been 0 degrees outside lately)
and when I sit at the computer and touch the keyboard, I sometimes get 
(give?) a big shock
then...my 'mouse' trackpad goes v e r y   s l o w l y, and I have to move my 
fingers 
over and over to get the 'mouse' to move, a little at a time (like 15 times 
to move across screen).
When I re-boot, it works fine again.

Weird, huh?
~shahara