We have version 6.3 of the profiler. When I hover over a given method in the main view it states "Source code is available for this method. Click to View, or right-click for further options."
When I click, however, I do not get the source code view to show. I've also tried hitting F10 to no avail. Note that we used to be able to view source -- not sure when it stopped working however (perhaps with one of the upgrades).