Now that I got PCLinuxOS working in VirtualBox with the Guest Additions. I can't seem to get the Shared folder to work right. The owner is Root. I looked around with Google, but I can't seem to find anything explaining to me how to properly change the permissions like you do with a Deb based Distro.
This is how I do it on a Deb Based Distro.
sudo usermod -a -G vboxsf yourusername
sudo chown -R yourusername:users /media/
This is how you do it on Arch:
sudo usermod -a -G vboxsf yourusername sudo chown -R yourusername:users /media/
The only way I can open the shared folder is to open the file manager go to /media/ and then open sf_Share as root.
I've been messing around with this. Just as I got done writing this post it started working. I don't know what I did!