Erratic keypress events when running compton

[fengshaun]

While running compton, keypresses don't always register when they should. Every once in a while (approximately 1 every 5 keypresses) are registered after a second or two of delay. This would probably be a demo:

abcdef [1 sec delay] ghijklmnopq [0.5 sec delay] rs...

this happens at least in termite, xterm, and urxvt. Compton v0.1_beta2 on openbox.