I dunno if its my monitor or lfs , but when i started lfs up today i had a split screen and 2 active mouse icons i changed the resolution , and then back again and it works fine but anyone know why it did that , if it happens again ill get a screenshot .

Most probably the resolution and / or refresh rate you selected in LFS were too high for your CRT. Newer CRTs shut off in that case, older ones display multiple images and can get damaged by that.