Playback works partially. There are artifacts, choppy picture, choppy sound and many other issues (on C2D T8300 - 2.6 GHz). Playback is slightly faster after applying patches against ffmpeg from here but there are still seeking problems, still frames or artifacts instead motion picture and so on. Patches was mentioned to give full support to similar camcoder called HDC-SD9, but it does not work with other Panasonic models.
From some other minior bugs is a loud 'buzz' after clicking pause button.
kdenlive 0.7.2 (rev 3051), mlt rev 135, ffmpeg rev 17028 + patches