Strange VNC Error Appears to Be Replicating Processes?

I'm running vnc into a server at work. It runs and doesn't crash, and I am able to use the terminal and whatever else, but the mouse stays in a circular 'thinking about it' state and I see the following at the bottom in the taskbar.

Problem: Keeps scrolling across but never crashes.

Anyone else who uses vnc to access the server sees the same behavior. Does anyone know a possible cause? Can provide more details if required! Just wondering if anyone has seen similar.

Solution

It appears as if the window list program was the culprit. Somehow it got stuck in a loop opening itself, and when closed, would reload itself almost immediately. Forcing a stop by killing the process(es) and denying a reload, and then rebooting the machine worked for me.

ps -ef | grep wmctrl

kill INSERT_PID_HERE