These are files recovered by the fsck utility, you may want to try and find out what they are before you delete them. The "file" utility (which is a command-line program (you'll need to install it with "apt-get install file" as root)) should be able to tell you the type of file they are, after installing it you can run "file /home/user/MyDocs/*.REC" to run it on all the recovered files. EDIT: If they are only 64KB they probably aren't important, but you may want to check anyway.