I just upgraded the firmware on my router. I know the newest version is 2 years old but I was hoping it would fix another problem. It seems to have fixed the problem I was having but now Pop3, SMTP, and FTP don't seem to work. I have fooled with the MTU but that doesn't seem to fix anything ( I tried 1492, 1300 and 796). I have also tried doing the triggering ports for 25 and 110 for the e-mail. I e-mailed linksys about this problem and they gave me the exact same thing to do in response. Anything else to try. Or is there a way to go back to the older firmware?