I've installed SP1 and I'm having no such problems. I would suggest as recommended above that you check the "Help and Support" service and set it to Manual or Automatic.

As for why people here don't answer the SP1 problems...well I see dozens of posts asking about SP1 and I just don't have the time to go through each individually.

Generally speaking, if you can, do a CLEAN REFORMAT/REINSTALL of XP, then install SP1 and that will minimize any conflicts between existing settings/programs and SP1.

Also, make sure you read my XP Tweak Guide (link in sticky up top) which is compatible with SP1.

Will help you more once you give more details of what you've tried so far.