Gnome's comments seem about right. Xp window decorations shouldn't be significant with graphic cards like that though.
Looking at the processes also, there doesn't seem to be a lot of junk running either.
Certain things might cause slowness such as windows updates or a virus scan....
Looking at the processes it doesn't look like you are using AVG 8 but if you are I have had some customers with problems like you have. There's a thread here http://elitetrader.com/vb/showthread.php?threadid=90568&perpage=6&pagenumber=4
follow my entries on this and subsequent pages also for links to manual cleanup instructions.
Are system temperatures OK? You can usually check in the bios. Or open the side for a visual inspection that nothing is choked with dust. Instructions here for dust cleanup: http://elitetrader.com/vb/showthread.php?s=&threadid=131491
Another very occasional problem I have had is where (for some reason) the intel IDE driver for the disk reverts to a low performance mode (such as PIO mode). You can check this on the device manager by clicking on the IDE Controller entry, then right click>Properties>Advanced settings> on the Primary and then secondary channel entries. Check that the 'current transfer' is at DMA mode 5 or better for one (the disk), the other (CD) will be mode 2 or 3 probably. If not and especially if one says 'PIO mode' then right click and uninstall the channel and controller entries, then right click any entry and 'Scan for hardware changes' which will automatically reinstall the drivers. Restart.
Could just be a virus or spyware in which case the solution could be a scan of the C:\Windows folder with Avira and a scan with Spybot and/or the cleanup process in the link above.
Looking at the processes also, there doesn't seem to be a lot of junk running either.
Certain things might cause slowness such as windows updates or a virus scan....
Looking at the processes it doesn't look like you are using AVG 8 but if you are I have had some customers with problems like you have. There's a thread here http://elitetrader.com/vb/showthread.php?threadid=90568&perpage=6&pagenumber=4
follow my entries on this and subsequent pages also for links to manual cleanup instructions.
Are system temperatures OK? You can usually check in the bios. Or open the side for a visual inspection that nothing is choked with dust. Instructions here for dust cleanup: http://elitetrader.com/vb/showthread.php?s=&threadid=131491
Another very occasional problem I have had is where (for some reason) the intel IDE driver for the disk reverts to a low performance mode (such as PIO mode). You can check this on the device manager by clicking on the IDE Controller entry, then right click>Properties>Advanced settings> on the Primary and then secondary channel entries. Check that the 'current transfer' is at DMA mode 5 or better for one (the disk), the other (CD) will be mode 2 or 3 probably. If not and especially if one says 'PIO mode' then right click and uninstall the channel and controller entries, then right click any entry and 'Scan for hardware changes' which will automatically reinstall the drivers. Restart.
Could just be a virus or spyware in which case the solution could be a scan of the C:\Windows folder with Avira and a scan with Spybot and/or the cleanup process in the link above.