Known bugs in 1.5.5
-------------------
* Prefs->Directories tab is broken.
* Completed files that are moved to category-specific incoming dir are not shared.
* When a file is in 'Complete' status, selecting preview results crash because
  the file is no longer in Temp but in Incoming.
* part.met files are incompatible with eMule 29c, possibly due to categories.
* Depending on category configuration some directories are shared multiple times.
* Download list control does not update with download state changes when only
  downloading sources are shown (Shift-Click).
* Shift-key must have been released once before Shift-Click in the download
  list control can be used again. The key-up event is not posted to the handler.
* Spurious deadlock in Web-Server when finishing statistics page.

Known bugs in 1.5.4
-------------------
* Category deleting isn't saved on some cases.
