Scan the system using Norton. Full system scan. Make sure it is up-to-date.
Scan also using online scanner to make sure that nothing slips in or missed - http://uk.trendmicro-europe.com/enterprise/products/housecall_launch.php
As for the program alert, see http://service1.symantec.com/SUPPORT/sunset-c2002kb.nsf/672c231f89ff479085256ee600556cc3/6ba3a51a248b934c85256ede00518da3?OpenDocument&src=bar_sch_nam and related links in that page.
What version of Norton do you use? What is your Operating system?
You might want to check your system for open ports too. Go to GRC ShieldsUp - http://www.grc.com/
Hope someone out there can help me? I keep getting this annoying High Alert - Program Control pop-up from Norton saying: Remote System attempting to access your computer
Remote Address: (different numbers all the time)
Local Address: same
This VERY annoying pop-up keeps on like 12 times or more and I have to keep checking off the "Always use this Action" box and clicking "OK" to "Block".
I don't even know what it is or why it does that. Some tech guy at AOL told me he himself "Permitted" it, but I'm not sure I should do that!!
It's driving me nuts! Please Help! Thanks in advance.