It appears, repeat appears, that LR4 has added Read-Only tags to many of my image files. I recently had a nasty virus, or some sort of attack to my system and this may be related, I don't know. I did not purposely set a read only tag on any file, and this appears to only be happening in LR and I can't clear them. I am the only user of this computer and the only administrator for it. Deep in the recesses of my mind is something similar related to the preferences file, delete the preferences file and restart the program, sound familiar to anyone?