Yes I had eTrust AV installed. and Zone Alarm on this computer and my sons.
eTrust was diabled while Avast was installed.
Most of the times, this is not enough... sooner or later, low level drivers, system files, services... will conflict.
Disable is not enough. You could, sometimes, install a second antivirus in the same computer IF you do NOT install any resident or plugin.
avast is NOT a good second, non resident, antivirus... We can suggest others to be the second...
why does avast install into the root of the regestry, entries that can not be deleted, and the uninstall via control panel nor aswclear.exe get rid of?
A lot of applications do that. You're probably refering to legacy entries of the Registry. You can try AVG from Grisoft, McAfee, Norton... and you'll see legacy entries in the registry (which access is only for system and not for any user or administrator).
Reason for uninstalling = Too aggressive, found too many things that were not actually a threat(false possitves).
Well... sometimes avast detects a false positive... it's not that often... But, are you sure they're false positives?
I think when a problem was deleted,avast, adaware, and spybot s&d never got everything....
Can you rephrase? Do you mean that after correcting (cleaning) a problem, avast does not detect it again? Isn't it a good thing?
(miised a reg entry somewhere) that left winlogon creating the temp entries.
Do you mean that some malware was not correctly cleaned by avast?
Be sure to use specific antitrojan or antirootkits applications to do so. avast is *only* an antivirus.