Be sure to sign up for the FortiOS 5.4.2  Beta so you can try out the new firmware on your devices. The Beta program helps Fortinet fix a lot of the bugs that make their way into the code. The more we beta test it the better Fortinet can sew up any issues before the hardware becomes releasable. Be sure to hit up the forums and discuss the firmware in regards to your thoughts, experiences, and any issues you experience. Fortinet takes it seriously and listens closely.