After a brand new install of windows xp, it runs great until about a week after. the response time is terrible! you click the start menu, and it takes about 3 seconds for that to popup (on a good day!). opening a program like internet explorer will take about 30 seconds to a minute. and once i start multitasking, the computer basically doesn't respond at all. but if u let it go, it doesn't freeze, just processes everything reeeeeeeeeeeeally sloooooooow............... is this a processor problem (celeron 1000 MHz) or maybe a hard disk problem? what do you think? i downloaded some utility software, (adobe reader, flash get, some windows updates) the hard disk is partitioned into 3 seperate drives (10GB, 15GB, 15GB approx.).