looks like u have trouble with ur pc and with internet.
the upper part of the lagometer stands for ur pc, blue means that ur pc has enought power and no frames getting lost, and yellow means that ur pc dosnt show all frames cause ur pc has not enough power.
the under part stands for ur connection to the server, green means everything is fine, yellow means that u lost a few parts of some packets and red means u lose packets.
the lagometer in ur vid shows two problems, if u have a lag u lose ur pictures and after it u lose the connection for a milisecond.
so if u lose pc-power u lose some connectionpackets that can be the result of a trojanerdownloader. run ur virusscanner and use hijackthis if it does not found anything u may should buy a better pc ;D
good luck i hope it helps u a bit