Comment 11 for bug 449196

X is a server which responds to client requests. If the client is posting a lot of requests it will drive up the CPU usage on X; this is not an X bug but rather an issue in whatever client application is driving X too hard. For assistance in troubleshooting issues with high CPU loads for X, see this troubleshooting guide: http://wiki.ubuntu.com/X/Troubleshooting/HighCPU