Left mouse click on some apps
Distro - Ubuntu 10.04 standard
Problem - Left mouse button fails to work on certain apps such as Firefox web pages although you can close the window with the upper right hand X.
Attempts at resolution - replace mouse with known good mouse, try different users etc.
Results - The problem is happening for only one user (myself). 3 other users have no problem at all.
So it is not hardware related but user related.
I think the problem happened when I mounted an external hard drive to add wallpaper but did not copy the wallpaper over to my home directory. I have auto mounted the drive at boot, but that did not fix the problem.
Being some what of a newbie, I do not know where to look to see were the problem is.
Can someone please point me in the right direction.