Have had one for 5 years – 2001 frame and it's been great.
Only issue with cracking was on the left seat stay. I put a new set of M4s on and it snapped on the first proper ride. This was an issue with the early frames and has since been sorted. I bought mine second hand and couldn't get them replaced under warranty – hence painful pay out! (some of you may remember me moaning about it on the old forum)
If the stays have a triangular cross section then check the gusset leading up from the IS mount towards the seat. If it's big then you're OK, if its around a cm or two (like mine) then it's likely to be original but may crack/snap completely under heavy braking with bigger brakes/rotors.
This has been the only real niggle I've had with the Truth. Had to change all the pivot bearings eventually and the main pivot bolt is a bitch to remove but I've had it for ages and thoroughly abused it. Moved to a 6 incher and am scraping up funds to rebuild it/replace all the knackered bits hanging off it.
There's a frame going for 350 on Bikemagic – looks like an early one with the fancy BB stuff but with dreaded triangular stays.