Is this correct?

When unwrapping something thats generally straight, it makes the uv wonky.

pic, which ill have to clean up manually.

Is this normal behaviour when uv unwrapping? or am i doing it wrong?

Non-organic objects tend to unwrap better when the uv unwrap method is set to ‘Conformal’ instead of the default ‘Angle Based’. You change the unwrap method from the bottom of the tool shelf (T) when you press U to unwrap.

Erh, T for toolshelf would be in 2.55 if im correct, im using 2.49b. and cant find that option. I know theres a few ways to unwrap in the U menu, but no conformal or angle based that i can see.

Oh I found it, in f9 tab. yay for google.