You'll like this one....
One of our users (creators) had the bright idea of backing up his course to his hard drive. Fair enough, always a good idea to be careful. However, he named the backup zip file "c:\\backup-6017...." thinking it would download it straight to his machine.
So we now have a file in the backup folder that cannot be renamed or deleted. The "c:\\" in the filename confuses Moodle:
Warning: rename(/WWW/moodledata/14/backupdata/c:\\\\\\\\backup-6017-20041021-1204.zip,/WWW/moodledata/14/backupdata/backup-6017-20041021-1204.zip): No such file or directory in /WWW/moodle/files/index.php on line 236
Error: could not rename c:\\\\\\\\backup-6017-20041021-1204.zip to backup-6017-20041021-1204.zip
Our server administrator is worried that a manual deletion of the file might compromise data integrity. Is that a legitimate worry?