lately ive been starting my windows xp normally. but recently every few times i start my computer the task bar seems to be not the way i left it. like the quick launch would be all pulled out and the windows that are open would be shown twice. what can i do to fix this?

If this is a recent issue I would run a System Restore to a point prior to the problem.

start > All Programs > Accessories > System Tools > System Restore

most probably there's bug or worm in your system... I had that problem once.. try running the registry editor by typing 'regedit' (without the quotes).. if it opens up then u can rule out the existence of a worm... or that SPECIFIC worm...