Lets hope not - I've just bought one off ebay -  S (or H?) 900 with xtr groupset (XT discs) and Lefty single sided front fork. At least I'm only 145lbs..

Hopefully it'll stop me from falling off as much as I often do - today I crashed twice! Once on a very steep and slippery hill, got overtaken by my rear wheel and slid down in the mud.. Then while desperately trying to avoid a large patch of nettles made the fatal mistake of fixating on them, hit a rut and went in face first      Amazing how much those buggers sting - I'd put them in pet hates - apart from the fact they're probably getting me back for:

1) Heavy duty strimming

2) Nettle soup earlier in the year (mmm!)