Attention PSA 5.x Red Hat Standard Installation Users. There are known issues in updating systems running the standard installation of PSA 5.x to Plesk 6. The SWsoft and Plesk teams are working on a resolution. In the meantime, we Do Not recommend that PSA 5.x standard installations use the Auto-Installer or Plesk 6 RPMs to upgrade their system to Plesk 6. Note: If you have PSA 5.x RPM on your system the Auto-Installer works well and should be used to upgrade to Plesk 6. Question: How can you tell if your system is a Standard Installation or an RPM installation? Answer: Login as root and view your /usr/local/psa/ directory If you have less than 5 directories you are most likely using the RPM version. If you have 10 to 15 directories in /usr/local/psa then you are most likely using the standard installation and should not use the Auto-Installer to update your system. Question: How do I upgrade my PSA 5.x Standard Installation to Plesk 6 without the auto-installer? Answer: Make sure your system is Running PSA 5.0.5. A patch is available for all builds to bring your 5.0.x system to PSA 5.0.5. Backup your PSA 5.x system completely using the PSA 5 Backup Utilities. (Option 1) Restore the data on a 2nd server running PSA 5.0.5 RPM and then update the server using the Auto-installer to Plesk 6. (Option 2) After the backup is stored delete all domains running on your server. De-install PSA 5.x Standard from the server and re-install PSA 5.0.5 RPM version. Restore the backup to your new PSA 5.0.5 RPM installation. Make sure all is working well. Upgrade to Plesk 6 using the Auto-Installer.