Intermittently, but I'm concerned a service will not be a complete cure. If it's a materials problem, swapping one wheel assembly for another could well be just a temporary fix. A search on the forum reveals a similar issue with the EM1, eleven pages worth, but only one person reporting the same issue with the E-P5! My guess is that it's a common part and hence there are many out there who silently get on with it. Nice cameras, but reliability is sadly lacking. An underlying design flaw or materials issue (quality), I hope the latter, otherwise it will be backwards and forwards for repair until the guarantee runs out. What we need is Zorki, that well respected Russian military-grade camera manufacturer, to get into u43, they wouldn't use consumer grade components, on no, it would be anti tank, nuclear warfare resilient, built like a brick outhouse!