So... I bought my new Alfine-equipped, belt-driven bike in late July. For the most part it has functioned flawlessly (as any $1000+ bicycle should, IMHO). The belt did slip off the cog while mashing up a hill shortly after purchase (see post #69 on page 3 of this thread if interested) and after a few adjustments it seemed that I'd solved the problem. Since the adjustment, however, I have been concerned that my belt tension was too tight despite assurances from the LBS that it was fine.
After reading a post from another Ceres owner I decided to back off the tension a smidge. After the first adjustment and test ride I noticed that the belt was starting to move off-track. I made another small adjustment and seemed to dial it in. Then came the acid test... I started to mash the pedals. Everything was fine for the first couple of tries, but on the third try the pedals gave way under my feet. I figured the belt had slipped off the cog again but when I looked down the belt line was fine. I tried pedaling again and, although there was some resistance, the hub wouldn't engage... nada through all the gears.
I took the bike inside and looked over the hub. The little yellow lines lined up in 4th gear as they should and I couldn't see anything obviously wrong with the hub, except for the fact that when I spun the crank, the rear cog also spun forward while the hub did not. Having no experience with IGH before this bike I am reluctant to touch anything on the hub and I am returning it to the LBS asap. Unfortunately, I have to work a 12-hour shift tomorrow and the LBS is closed Sundays and Mondays. Even worse, this is the week that they take off for Interbike in Vegas. It looks as if my nice, new bike may be sitting idle for a week or more while I wait for my LBS to accommodate me.
Anyway... are there any other Alfine users out there who have experienced a similar problem? If so, I'd sure like to hear from you. In the meantime I will be riding my Schwinn and thanking the Cycling Gods for N+1 (while cursing them under my breath at the same time).