Programs not closing correctly

[disptchr]

Running Windows XP Pro with all updates.

When I have a program open such as IE7, Outlook Express and a few others, then close the program, and when I try to reopen it later, my computer freezes. I do ctrl,alt,delete to bring up task manager and it shows 2 instances of the program running. The one I thought closed and the new one trying to open. Sometimes and I can get them to close by using end task, other times I have to restart the computer to clear the problem.
Any help greatly appreciated!

[kev7555]

System specs on this computer?

Anti-virus and anti-spyware programs running? which ones?

-K

[TwoRails]

are you still overclocking? Using ''end task'' is the last resort, and often you should reboot anyway as having to end a task means something isn't right.

I would do as indicated above and run a full AV & malware scans, and also posting your specs would help.

[disptchr]

Not overclocking
Panda Firewall and Anti-Virus 2007 with all updates, run virus scan every couple of days.

Operating System System Model
Windows XP Professional Service Pack 2 (build 2600) Asset Tag: 123456789000
Processor a Main Circuit Board b
2.40 gigahertz AMD Athlon 64
128 kilobyte primary memory cache
512 kilobyte secondary memory cache Board: ASUSTeK Computer INC. A8N-SLI DELUXE 1.XX
Bus Clock: 200 megahertz
BIOS: Phoenix Technologies, LTD ASUS A8N-SLI DELUXE ACPI BIOS Revision 1016 12/01/2005
Drives Memory Modules c,d
300.07 Gigabytes Usable Hard Drive Capacity
214.30 Gigabytes Hard Drive Free Space
NVIDIA GeForce 7800 GT [Display adapter
DVDR/RW EX162E-A USB Device [CD-ROM drive]
LITE-ON DVDRW SHW-160P6S [CD-ROM drive]
SONY DVD-ROM DDU1615 [CD-ROM drive]
3.5" format removeable media [Floppy drive]

WDC WD3000JD-00KLB0 [Hard drive] (300.07 GB) -- drive 0, s/n WD-WCAMR2354344, rev 08.05J08, SMART Status: Healthy 2048 Megabytes Installed Memory

Slot 'A0' has 512 MB
Slot 'A1' has 512 MB
Slot 'A2' has 512 MB
Slot 'A3' has 512 MB

[Negeva]

Not a fan of Panda software - had issues with it in the past. Try shutting down all of Panda applications and see if that clears up the problem. If it does then I'm sure you know what to do - kill that Panda.

[disptchr]

I am a fan of Panda Anti-Virus, have had it installed in my various computer for over 10 years and have never had a virus. Every once in a while I start to wonder so I download and run Spy Bot Search and Destroy, Ad-Aware, CWS Shredder and a on-line virus scan from another company.
They have never came up with one virus or spy ware and no I don't work for Panda!

Oh, by the way I tried a complete un-install of the Panda Software just to check and that did not help the problem.