Hi,
I've had this problem with both XP original and XP with SP1a, used to slowly loose upto 3 TaskBar icons, like:
1. Download Accelerator Plus (5 and 7)
2. ADSL usage meter
3. TweakXP's Pop-Up blocker
I hane this problem with
Phuzz Indexer
It starts Up with Windows OK.....
But after a while it dissappers from the Task Bar....Weird....Plugnplay is disabled via the Grc Utilty......