Today (11/5) I started getting this message when I clicked on various things:
PHP script /home2/golden/public_html/index.php is protected by SourceGuardian and requires the SourceGuardian loader ixed.4.4.lin. The SourceGuardian loader has not been installed, or is not installed correctly. Please visit the SourceGuardian php encoder site to download required loader.
This didn't happen all the time, even on the same action. Also, I never saw the error before today.
Another error that goes way back (and is probably already noted) is the one where the system won't let you download a file when you first try it on any given day. The second and following tries work fine, so it's no big deal for me anyway.