Mine is a related problem to above (?) K-3 continuous shooting mode did not work after short time after I went into the menu trying to tweak settings and then I went on vacation and walking around with a K-3 for several days and let it go. But it did work in full manual mode. Someone's posted directions to adjust some C menu sections settings did not work. What did was to switch to M manual and save that as a one of the USER settings, and then go into that USER setting and change the shooting mode for not to be MANUAL. Going into C- menu focus and shooting settings combos can cause problems obviously that are not well documented and I will avoid changing for a while especially until I write down each setting. -call me an enthusiastic enthusiast with much to learn,