Uhm... let me explain:
1. AVAST scanning mailboxes, interrupted, I saw the temp files not removed.
2. I manually deleted the temp files.
3. In order to not keep on manually deleting those files I changed AVAST options so now the "mail" folder is excluded.
4. No more orphan temp files.
I say it again: mail excluded, no more files left in _avast_.
Now you may wonder why I am posting here if my local issue is "solved".
Simply because if I am having the issue it means other people can have it as well and IMHO it should be addressed.
I am happy you are not having the same issue but, you see, that is not particularly meaningful. Even if there were other 100 people who come here and say they aren't having any problem with it, still it doens't mean much.
I have a relatively small "mail" folder, the boxes are compacted, spam deleted, trash deleted, I've got only incoming and sent folders. In those folders there are my mail and some messages do have attachments. So what, can't I receive attachments? Those attachment are relatively small documents and images, some zipped, not a whole DVD content.
About skipping files, as I said above it would be much smarter to NOT scan MBOX files at all instead of decompressing, extracting, whatever it is done and then skip the contents. Incoming mail is already scanned, even if an attachement is executed the "standard shield" should stop it if infected. So it seems to me the scanning of the mailboxes is just a waste of resources/time. Expecially given the difficulties I am seeing.
Last thing: it is a little annoying when you are told between the lines that the issue you are reporting is not a flaw in the software but something wrong in you. Ok, I am not paying for AVAST but in the same time I am not payed to testing, bug finding, reporting and such.
I am seeing temp files more than 100MB left in _avast_.
I can reproduce the issue at will.
You say the issue doesn't exist? Ok, fine.