I am trying to resurrect an old Acer Travelmate 2450 with XP Home for use on an upcoming trip. This install is fully patched. On some days, the disk thrashes for several tens of minutes (the drive led stays on, occulting not blinking) and response to keys or mouse-clicks is painfully slow. This makes the computer practically useless.
I use Firefox as my browser. When I run CCleaner, I find (for example) 30 Meg of Firefox temporary internet files but three-times as much junk generated by IE (not used by me). I run Vipre internet suite, scan regularly and it has quarantined one trojan. I just ran Malwarebytes and it found nothing.
Any ideas on what should cause so much thrashing? It was never a problem on my big machine before I switched from XP to Win 7.