hold first and last fret down on low E and measure the gap at the 8th fret it should be about the width of 2 playing cards
Ibanez IC300
Fender American Strat w/RioGrande texas specials

Fender FM212R
a now broken tube amp

Quote by Gofishus
Dual Core. Do More. <-- Intel branded women.

Member of the Stevie Ray Vaughan Fan Club
The action is usually the telltale.

but seriously - put your face by the bridge and look down at your neck with one eye. Pay particular attention to any bending from the 12th-1st fret. If you wanna get techie, use a millimeter ruler and measuer all your string spacing.
Inflatable Guitar
Digitech GSP 2101/Mosvalve 962/Yamaha S412V
My Imagination
If you notice any buzzing from certain notes, it usually means you have a problem with your neck. Major temperature differences are really bad for guitars. Avoid going from extreme to the other extreme....really warm to very cold etc., this can really make your neck twist and warp.
~Metal Up Your @$$~ \m/
I think I may have a bit of a bend. I'll take it to a guitar tech to see what they can do. I don't really want to, as I can't really afford to, but I'd rather let someone who knows what they're doing look at it rather than me mess it up.