The Glitches Are killing me!

Today I spent about an half hour editing a video for my YouTube but then my audio clips were moved forward by a couple of seconds and I had to fix it (which took forever) then constantly it kept happening then i had to restart my whole video, although this app is useful, it has annoying glitches in it where it will screw up your whole movie/video which happened to me so this is why I rate 1 star

Rival at war dude about iMovie, v2.2.3