I think the slashed circle is just part of the icon for Outlook's Junk
E-mail folder, nothing to worry about.
Please see the FAQ for the disappeared Junk Suspects folder:
http://spambayes.sourceforge.net/faq.html#help-i-deleted-the-unsure-spam
-folder.
From:
All,
I'm having trouble conceptualizing SpamBayes for Outlook's Filtering Tab.
My settings are currently:
Certain Spam: 90
Possible Spam: 15
Does this mean that:
a. If a message scores more than 90 it's dumped in my spam folder
b. If a message scores between 15 90 it's dumped in my possible