Rockbox

This was tested on the latest SVN with the MR500.

The problem is that if you erase a directory in the root through rockbox when directory cache is enabled it does not remove the directory entry from the list.

Rebooting the player and restarting rockbox still shows the "deleted" directory. Running FSCK shows errors after performing a delete on the player.

I have not tested this without directory cache enabled, but it would be worth double checking with the latest changes.

Steps to reproduce:
1) With a host machine via USB create a directory "mytest" on the root of the player
2) Copy some folders with songs into the directory with the host machine
3) Disconnect the player from the host
4) Erase the folder through the files menu, note that directory still shows in list.
5) Run FSCK on the drive (or chkdsk)

This is my output from dosfsck (I renamed the files in the message to make it more clear on the setup):
sudo dosfsck -a /dev/sde1
dosfsck 3.0.3, 18 May 2009, FAT32, LFN
/mytest/folder1/subfolder1
Contains a free cluster (492197). Assuming EOF.
Performing changes.
/dev/sde1: 10689 files, 1192343/1219839 clusters

As a note my directory structure is something similar to the following in case it matters:
->mytest (at root)
___\->folder1
______\->subfolder1
_________file1
_________file2
______\->song1.mp3
______|->song2.mp3
___\->folder2
______\->song1.mp3
______|->song2.mp3