For the update parameters, I meant both at the same time, the dial up settings AND the permanently connected. My guess is that with dial up alone, avast should wait a little longer to try to connect (instead of trying immediately).
To be clear, I don't think this has something to do with some malware, and I still think that opening the value to 50 max connections is worse than having this event listed.
Since you seem to have avast uninstalled, I would run the specific removal utility
http://www.avast.com/uninstall-utility for avast under Windows Safe Mode. Run it more than once. Each time, select a different version / edition of avast, until you cover each and all versions you ever had.
Then manually clean any (hidden) folder containing "avast*" or "alwil" in the folder's name.
In Windows Normal Mode, reinstall the
latest stable avast and reboot.
Now delete any and all firewall rules related to web browsers and to avast.
Set again the
dial up setting, the "
load services only after other services",
save and
reboot.
If the event returns back, I'll give you a manual change to the avast.ini file to delay the update attempt and we'll try that, but this should be only as a last choice.
Of course, if you are using another security tool, or if you used / tested another security tool and you uninstalled it, then it would be best to, first of all, run the respective removal utility for that other tool (see my signature's links) so to remove any leftovers that could conflict with avast.
