Okay I give up so let me know what to try. This issue began 2 weeks ago and just annoys me to death. When I get a new email in and read it at some point I assume when a sync or auto refresh happens it auto puts that mail and any read email from the inbox into deleted items folder. No rules, nothing in junk mail.
I have deleleted the email profile and rebuilt it. It only is affecting any email after 5/8/2009 anthing from that date and older is unaffected. As in it remains in the inbox. I went on vacation and when I cam back the issue had begun.
I would look at your autoarchive settings under: Tools>Options>Other>AutoArchive. What settings do you have there?
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Therefore if anyone is in Christ, he is a new creature; the old things passed away; behold, new things have come. 2 Corinthians 5:17 (New American Standard Bible)
There are settings for what Outlook is to do with read e-mail, while in your inbox look under View - Current View also check out the auto archive settings.
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Sgt. Schultz
"I have come here to chew bubble gum and kick ass ... and I'm all out of bubble gum"