First sensor cleaning
I had a nasty little dot on my e-3 sensor which required a physical cleaning. I suppose that's pretty good since its been 4 1/2 years with no previous issues. The dot was so stuck that a rocket blower wouldn't move it, had to resort to a cleaning pad. All is well, works like a charm now.
I have to say that because the Oly dust buster works so well, I spent hours looking for a spot on one of my lenses (for some reason it only showed up with the 12-60mm). Then, in desperation, I put the camera in cleaning mode and looked really carefully, sure enough there was a very tiny dot on the sensor.