When ever i log out my client resets .. graphics setting, and acct name even though i check the remember me box.. I have tried unchecking the read only from all files but it reverts itself automatically LOL.. I have never had this issue before ..
1. Restart your PC.
2. Close and exit torrent. Move your WoW -folder to other folder, away from Torrent's Download folder.
3. Right click WoW -Folder, select properties, un-check "Read-only" and Apply.
4. If you get prompt, Apply changes to this folder, subfolders and files and click OK.