Sorry for my blunt response let me add to this.
Windows 7 Pro 64BIT 6GB of memory
SWTOR will launch with about 1.4 GB in use from both swtor.exe's
Over the course of a few hours game play from switching of characters to loading zones to crafting the memory on the larger swtor.exe will grow to about 3.2GB and eventually textures and load times will strain to load if at all. Even closing the client and going back in the performance is not the same. restarting the computer is obviously a clean slate and restores the game performance back to normal.
so while it may not be a memory leak it sure seems like it to me. or the client doesn't know how to dump things out of memory as it moves forward with other tasks. but once that memory fills up to 3.2GB or so the client crashes to desktop.