I seem to have a problem with FiOS Internet on my machine, which is running Windows XP. Slow response from browsers and FREQUENT lock-ups (both IE and Firefox). It's extremely frustrating! I had Verizon DSL before and never had such problems. The installer assured me XP was OK.
I don't have a lot of other programs runiing in the background and meticulous on keeping up with my antivirus and antimalware. All I can think of is my operating system might not be up to snuff. Anyone else out there have issues with FiOS and XP?