here is a short list I got searching for bugs in the GA...
-Cosmetic Issue / CSV Icon Reporting WebSecurity
-Missing INFO-302 New Firmware Up2Date installed during update from 3.90 to 4.00 GA -HTTP Proxy Virusscanner doesn't scan Eicar in LHA & LZA File
-Switch to German in WebAdmin Language doesn't work
-Remove embedded objects (ActiveX/Java/Flash) / Active Content Removal / HTTP/S PROXY not working
-USV support not working, V7.400 does shutdown but comes not up again...