ok i have a problem....

i have been trying to download some files via transmission, and thedse files were going straight in to "downloads" on the n900

after a few mins i get an error saying something like "can not save file, read only memory"

because the file initially started to download, the full amount of memory has been allocated, and so i went to file manager and tfried to delete the file

i cant even delete the file now as i get the same read only memory error. how do i fix this?