I have also noticed this. The files come up first without an extension and then are renamed with the extension .au or .mov . Also, the appropriate icons for those file-types are not displayed, only the generic question mark icons. I considered filtering all files without extensions but wasn't sure how to do it as a security filter
The filter is applied to the file name and if the file name returned by the search hit does not contain the extension... I think that if you add, delete, or edit any security rule, the filter should get applied to the file names, and these removed. If so there is a missing call to security in the code doing the renaming... I RG it would be metadata processing, which I also RG includes MIME type or something similar.
Shareaza use file name from first hit even if it banned. If file have other hits without banned words Shareaza show this file whith name from firs hit.
How about extensions, for the most part this doesn't change ... and what I witnessed is that a blocked extension sometimes still gets through.
In such a scenario, could a temp ban based on the hash of the file be created on the first hit of a matching result ... this way the filename is blocked and so is the hash temporarily?