Originally Posted by PXBB
We have been experiencing this behaviour since January 2007 and have been working with RIM non stop for 11 months trying to get to the bottom of the issue. What we have seen is that the emails that reappear in the users inbox are emails that have been previously filed, rather than them duplicating. The filed emails are moved back to the inbox and the only resolution is to get the user to refile them. A real pain and extremely time consuming.
We have been told the actual fault lies with the device itself. A workaround has been coded for us that is server side and that was installed last week. However, we are still getting users reporting the problem.
Once I have an update, I'll pass it on.
What a nightmare 11 Months! But you're right it is where messages have been filed and then become unfiled - I've just opened a call with RIM, so I'm really hoping that they resolve it for you soon and can replicate the fix for us.
Thanks for letting me know I'm not going mad though