Thanks for the advice and sincere apologies for the delay in response; I had to go away on a family errand. Okay, I have had a bit of time to think and look back and it seems these errors are software-conflict related because they are obviously not common errors. The errors occurred soon after I installed Java 6 Update 20 on Windows 7. I probably avoided the same errors on XP Pro because Java was not updated.
Maybe a short cut would be to do a re-install, but 64 rather than 32 bit as I read somewhere of a user repeatedly getting these same errors despite several re-installs. The 64 bit would also alleviate the occasional malfunctioning of programs that I regularly use such as Open Office, Revo Uninstaller, and Truecrypt.
I will post back the results of which option I take.