After a short nap I wake up my PB and it functions as usual. I mouse over to a shrunk Firefox window, open it, and continue reading down the forum that I was on prior to the nap. Problem is when I click for the next page, nothing happens. The link clicks and changes color as usual, however nothing happens. I check another tab, same thing. When I go to click the reload button at the top, a little drop-down alert says "http is not a registered protocol". Close the window, quit FF, and restart and there are no problems. Currently on a network, wired in ( ), and left the cable connected when machine went to sleep and also when taken out of sleep. Any ideas on what this is/means or what causes it?