Files deleted from SD card are restored after restart I use my sd to watch movies, everything was working fine, suddenly every time I reboot my tab the deleted files are back in the sd card.

I tried to format and still same issue, the deleted files are always coming back.

I tried many apps, they seems to delete the files, but if I reboot or format the sd they come back.
Clear the cache on your  File Manager,  the browser you used to download the movies, and for the application  involved used to play the movies.

For each of those applications select the application and clear its cache:

Settings > Applications > Manage Applications > All (at the top) > {application} > Clear Cache