Vlk
5
There must be only ONE IgnoreProcess= line in the INI file (in each section). They are not cummulative.
If you need to have more values, separate them by commas. I.e., instead of
IgnoreProcess=avast.setup,
IgnoreProcess=telnet.exe
do
IgnoreProcess=avast.setup,telnet.exe
Also, the experiment you made is somewhat strange because port 110 is actually redirected by the Internet Mail provider (to scan POP3 traffic). So unless you disabled this provider in avast, possibly double redirection was attempted and it could’ve messed things up badly… 
Thanks
Vlk