I installed Avast! 4.8.1201 yesterday, since my old AVG antivirus was outdated.
XP sp2, Thunderbird, and Superantispyware , and an router firewall.
After removing the AVG, and installing Avast! and rebooted ( several times ) , I started up with an update, to be sure to have the latest datafiles, and programfiles. Including another reboot ( Avast! insisted ;-) )
Then after booting up again, I started thunderbird to access my email.
I have several email accounts - since I'm a forum admin on 3 different forums in Norway.
Some with standard pop3 accounts ( port 110 )
and a few GMAIL accounts, (port 995) .
After a while I got the "famous" "Avast max connection exceed"
The mail collected trough port 995 came trough, but those with port 110 did not !
And I did NOT get the mail from the port 110 accounts...
Until I disabled the scanning of incoming mail service... Then they arrived without problems.
Today I tried again, first without enabling the incoming scan, , and later I tried again with scanning of incoming. ( after reading trough this topic here )
Now it worked without problem...
I did NOT have any troubles like this with AVG...
Hope this helps to find the problem...
regards Asbjorn.