I ran an apt-get dist-upgrade today and it installed some ubuntu-security updates. unfortunately I don't remember exactly what packages.
However since then, I couldn't play any of my videofiles anymore. At first I thought my MD wasn't working properly, so I set it up again fresh....but no luck.
The core played the files, but the MD is a no go. Now I fired up my windows-box to ask here in the forum...and I got a message, that not all of my network-drives could be connected....and lo and behold: I cannot access anything anymore under /home/public/data...access denied!
So I guess something in the updates screwed up the file-permissions...so how do I get it all back to normal?