Okay, my VPS is running fin, and I have very few problems (touch wood) but every now and then the CPU usage goes high, I check the current cpu processes and a lot of the use is down to "nobody" so I kill all the nobody processes and they just restart making the cpu usa go up again and slowing down the VPS.

However, if I reboot my VPS, when it restarts the cpu usage goes right down to its normal level, the VPS runs like a dream (responsive and as fast as I have come to expect it to be) and I have no more problems.

This has happened 3 or 4 times in total (Since March) and while it isn't a problem, I am curious to know whats happening and why.