Coincidentally, mine started acting up again. I recorded a show on Sunday night. The set was about 95 minutes. After the set, I went to power down the MTII, only to find it was already off! It apparently powered down after 85 minutes, so I lost the encores. It was not the battery, because I played back over an hour of the show later before the battery expired. It was not in need of a format because I had formatted it before the show.
Needless to say, I've HAD IT with the MTII.
I ordered a Sony PCM-M10 yesterday. At $229 from B&H, it was more than I wanted to spend, but two of my taper friends swear by the Sony. They will not use anything else. I'm just hoping the internal mic pre on the Sony is as good as the MTII (which is excellent). I hate wires, so won't use an external mic pre.