Every so often my phone resets itself (usually after I've been switching between applications a lot). When I say "reset", I mean the screen goes blank for 20 seconds or so, then I have to put my phone lock code in again (but not the SIM lock code - so it's not fully rebooting just resetting). I think the reason is shown in the attached screen shot. The memory gets full, but it seems like it's unable to close any apps down, and all the apps are just constantly restarting (the phone is very slow at this point). Is this some kind of memory leak? Any way I can figure out what's doing it?