I like MacGDBp and have used it before in the past. At the time I was running Mac OS X Lion. A co-worker of mine, also running Lion, was unable to use MacGDBp though. Each time he'd try to set a breakpoint by clicking on a line in the source viewer, the spinner would start spinning and the program would just hang, until maybe 5 minutes later it'd just crash.
Now I'm running Mountain Lion and seeing the same behavior.
Is this a known issue? Is there something I can do to fix it?