Forum File extension has an extra dot.

[محروم.كوم]

For some reason when users upload files, they are getting an extra dot appended to the extension. For example if the file name is image.ai, it will show up on the site as image..ai file1.pdf will show up as file1..pdf

When the files are downladed to the user's local machine, they still have two dots in the extension, however they open fine with whatever program they are associated with.

This is a new vb4 installation that was imported from IPB. The old files imported fine without this extension anomoly, but all new files that are uploaded have this extra dot. This is file system based storage, not database. Any ideas? __DEFINE_LIKE_SHARE__