You can try to delete the ARP cache.

• http://technet.microsoft.com/en-us/library/bb490943.aspx

• netsh interface ip delete arpcache

Thanks cor-el!

Your citation helped and caused additional research, as I have quite an accumulation there, and now I am finding it isn't all Firefox!

This link may help, too:

http://www.tech-faq.com/clear-arp-cache.html

At least one computer magazine publisher quit acquiring, testing, evaluating and writing about registry software a number of years ago, because they could find no system improvement was evident after a registry product was run.

Other wise systems developers have said that the "perfect" registry cleaner probably doesn't exist; that's it a balancing act between being too lethal (and bringing the system down) or too lite (and a waste of time), therefore each of us must define how squeaky clean we wish to be.

For me it's a curiosity thing!