What I would do in your situation is uninstall Reader 7, then install Reader 8.3 from http://get.adobe.com/reader/direct/ - I had it successfully running on Windows 2000 for a long time before moving to Windows 7.
Is there a specific reason that v8.3 will prevent this problem from occuring?
Reader 7 is very old; I don't remember what components were in it.
I know such a thing did not happen with Reader 8. Just make sure that you uninstall Reader 7 before installing Reader 8. Also, Reader 7 is no longer supported.
Thanks for your suggestion...but I'm looking for the reason for the problem. I'm not even sure it's caused by Reader. I also think I've tried v.8 in the past and didn't like it, so went back to v7. Which works fine for me, and I could care less if it's not supported. I usually prefer older versions, they often work better, faster, and have a smaller footprint.
But I do want to find out where this "adbeacrosfocus" watch comes from. I wonder if it's part of an auto update module?