My other issues have been with AF implementation. I've never been particularly bothered by the MF issues, but why won't the camera hold AF on the shutter button after an exposure is made, so as not to have to keep on refocusing and reframing after every shot? I know I can use the AFL button to hold focus, but I find the implementation unintuitive and often ties me in knots. I have generally used the camera in MF using the AF button to acquire focus, but the AF box in that mode is huge, leaving me feeling insecure as to knowing exactly where the camera has focused. Had Fuji implemented the auxiliary focus spots solution from the recent FW update in MF mode too, then I almost definitely would have kept the camera. I'm a newspaper and magazine photographer by trade, and often work in fairly fluid fast moving situations where the equipment I use has to hinder as little as possible and not flake out on me by not waking up quickly enough or leaving me worrying about acquiring focus quickly or reliably. The wake from sleep does seem far more reliable after the new firmware, but I still manage to occasionally forget to eject the disk properly from my Macbook when I'm in a hurry and effectively brick the camera, (as far as working is concerned), until I can get the card back into the computer and re-eject it properly.
I still might keep the Fuji, but expanding my M4/3 kit is almost definitely on the cards. A 28/40/90 lens spread would cover probably 65% of what I currently do with my Canon 5D kit and I used to reach regularly for the GF1/20, (with whatever viewfinder), on professional jobs alongside the Canon's, which is not something I have done so much with the X100. I'm just getting to the point where I have so much kit, much of it overlapping in function, that where this overlap occurs, it's got to be pretty darn reliable to justify staying in my arsenal, and I'm not quite sure the Fuji is quite there.
A couple of weeks back, I covered the Appleby Horse Fair in Cumbria which alongside my Canon 5D's I shot partly with my Panny GF1 a Voigtlander 15mm set to f5.6 at various hyperfocal distances and a 28mm bright-line finder. I missed almost nothing, it was probably the most fluid shooting experience I have had since giving up my Olympus OM1's and 2's all those years ago. An Olympus 24mm equivalent with a focus scale and hard stop's!! In the word(s) of Homer Simpson mmmmmmmmmmm. A 28 would be even nicer!!
As was said by another poster, the X100 can be fussy, but not as fussy as me!!
Mark
http://markpinder.wordpress.com/