Hi,

Everything was working fine until suddenly WordPress can't write anything to disk, such as update plugins, upload media, etc. Also as a result of this, w3 total cache doesn't work, because it can't write to disk.

I have checked to make sure that permissions are set to 755 and owner is www-data (apache user).

Temporarily swithching permissions to 775 or 777 and running an update still didn't work.

I have even tried to recreate the uploads and upgrade directories.

Nothing works. Any suggestions on a fix for this?

Thanks!