This must be an Internet addict's worst nightmare.

Recently I noticed Apple Mail fetching some emails and then I could not find them in my inbox (or in any other folder). Instead I have this in the console log:

2004-01-29 20:12:17.167 Mail[923] failed to append message  (_rangeOfBytes: Out of bounds)

In fact, I have a lot of these error messages. The mails I watched disappearing have all been spam (Mail displays the subject line while fetching), but this is not the spam filter at work (it just files spam away, not makes it disappear). I am trying to comfort myself by assuming that those spam messages were somehow malformed and this does not happen to normal mails.

I am worried.