Poorly Mouse....
I have a fairly good spec. inherited XP machine but have always experienced slightly odd behaviour from my mouse - well, actually, from all of my mice as I have made changes over the time that I've had this computer.
Every now and then out of the blue (sometimes not for days but then several times an hour in some sessions) clicking the mouse buttons does absolutely nothing. The only fix (and it's only a temporary one) which I have found is to open Task Manager (ctrl + alt + del) and then immediately click on the X to close its dialogue box. The Task Manager box doesn't disappear but just goes paler so I then click on the X once more to close the box - whereupon my mouse works perfectly once more.
I find that the problem occurs more frequently upon changing between applications (Firefox to Thunderbird or vice versa, for example) or perhaps upon finishing watching a clip on the BBC news site.
The above fix works without fail every time. It's tiresome, though. would any of you kind people have any ideas for a permanent fix?