UPDATE

Right, well after taking peoples advice on board here is my updated VP-free:

http://www.pinkbike.com/photo/789186/

http://www.pinkbike.com/photo/789184/

Its now weighs in at 36 pounds, so I am just one ellusive pound of my target weight.

Changes include new DT Swiss FR rims with DB spokes and xc tubes and the obvious change of forks to Fox 36's.

Preety pleased with it now, just waiting for Thomson Stem to arrive and I'm about there until I can afford to upgrade the chainset to something lighter and get a carbon chaindevice.

Took the forks out yesterday to give them a damn good thrashing and they are silly good, better than the boXXer WC's hands down.

Right, just need a Giro Swithblade and a Camelbak and I'll be a proper freerider...

Anyway, thanks for the advice guys and see you out in France/at the races later in the year!

looks even better than before with the fox 36 forks. good job

Who'd ride a bike like that, heard vp-free's are for girls.

I-beam would be lighter but then you'd be sacrificing function over weight. Stick with the thompson and go witha lighter saddle. Could go for the mrp type 3? Would look better too and then the stem does need changing as you said. Latex tubes and lighter tyres?

looks like a pile of w*nk to me. Those frames just dont look right with single crown forks

If you want it lighter Middleburns are lighter and stronger that pretty much any other ISIS crank

http://www.pinkbike.com/photo/789186/

single crowns to me, i'm not seeing things yet 

arse ok i cant type

Think I'll stick with the standard DHX for now, air version is still relatively untested. Got France looming as well, still don't fancy an air shock out there.

let us know how you got on. Good luck!!