I have a similar problem in Hardy Alpha 5, all single clicks become double
clicks for the left mouse button. Because
of this the desktop is difficult to use. This is only the case for my external
USB mouse (Apple Mighty Mouse), though
I had no problems with it in Ubuntu 7.10.
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Right button
This is very weird, but although I have updated no software, I can no
longer reproduce the problem! It was there over multiple reboots. Now
that I've logged a bug, it's gone.
** Changed in: Ubuntu
Status: Unconfirmed => Rejected
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Right button single click has become right button double