I've got the 03 sworks version - decent bike at the time, but mebbe a little bouncy when pedalling compared to Spesh's slightly smaller travel (Stumpie FSR ?) a year or two later (a mate bust his Enduro and got the other as a warranty replacement). His failed via a crack around the front of the seat tube, so I guess check that carefully, but I'm not aware it was a common problem. AFAIA any issues they'd had on earlier models has been fixed - some 02s fractured along the weld on the frame suspension mounts (a weld/manufacturing clearance issue I gather, from quizzing a Spesh guy at a show), and the 01s - or earlier 02s mebbe - had seatstay failures nr the disk mount I think which were fixed with a revised design. Another mate bought an 04, which I think was unchanged apart from paintwork and parts.
Maximum fork length was 125mm ,and single-crown, to retain the warranty.
The flip-flop link has two settings - one gives more ground clearance and steepens the head angle a tad. Using the low setting (which I must admit I've done most of my riding with) you tend to clip treestumps with yer pedals.
If there's one weak point it's the mech hanger/dropout design - the chainstay dropout is pretty weedy, the same mate with the fractured from smacked his mech//hanger and the dropout bent with it

Rideable with new hanger but missing the small amount of the dropout.
I fitted mine with a hanger banger (On-One do a universal sram/shimano version - or used to, I think someone else now makes copies) to give it more support:
http://northshorebillet.com/products/hanger-bangers/
Curiously, a year or two later Specialized were fitting something similar on some of their longer-travel bikes, IIRC
