While is seems that almost everything related to the current release (as of the time of this posting) is working properly (scanning, updating etc), I am getting the Driver Compatibility popup show below. There are other accounts of this information on the Internet and apparently this is known to Symantec. They are working to solve it, hopefully by the officially release date next month.
[...] ACNS has just made available the new version of Symantec Endpoint Protection. This version not only solves the various firewall issues we were experiencing but also works properly with Windows 7. As I reported earlier, Windows 7 was popping up an annoying driver compatibility warning (http://rydberg.biology.colostate.edu/sites/bioit/2009/09/18/symantec-sep-windows-7-issue/). [...]