Can't delete any files in my download folder asus sl101 slider running cyanogenmod 10

This problem actually started around when I upgraded to cm9.1 and I think I got an error that my android profile had changed or something. from that day forward I have been unable to delete anything in my downloads folder. 

The following did not work


rm /sdcard/download/filename
removing with rootbrowser
adb shell> rm /sdcard/download/filename
remounting the sdcard




I get the error that the folder is read only and when I try to change permissions it wont let me. 

I was able to 

mv /sdcard/download /sdcard/download.back
mkdir /sdcard/download

but still cannot delete from the old download folder.

Eek!
I'm not sure if you're still having this issue or not, but a couple of things that come to mind:


In the output you paste in your responses, you mix terminal output with $ and #. You need to be root all the time which means that you should always see a #.
If I were you, I would first check the permissions on the old download directory with something like ls -alh | grep &lt;foldername&gt;. Who owns the directory, what group?
Try changing ownership with chown, changing chmod to 777 recursively (just throwing stuff at the wall here to see what sticks). After setting yourself (root) as the owner and giving everyone full rights to the directory recursively, I would try rm -rfv &lt;foldername&gt; and see what output I got.


Hopefully this might help someone else. Also, when you do ls -alh it should show you if it's a symlink, and if so to where. If it's a mounted folder, I would run something like mount | grep &lt;foldername&gt; to see what's going on.