Postini setup process and support are a joke. You can call someone who tells you to look at a help file, and the help files point to help files, which have no screenshots, and reference menu and navigation options that don't exist. Also asking them how to get Postini to work with Google Apps was like speaking a foreign language to them, as if we were the first person to need this. Despite the fact that it was up-sold to us as an add-on to Google Apps.

Other than Postini, though, I do like Google Apps.