I have the version Ubuntu Mate from the main Raspberry Pi download page.
I'm just getting things installed and configured.
It usually doesn't take long for things to freeze. The Pi3 ACT led is on pretty solid, occaisionally blinks off.
Have 32gb samsung pro+ sdcard. Tried overclocking the sdcard. It doesn't seem to affect how often pi freezes.
If I go away and come back hours later, the ACT led is off and the desktop responds normally but it doesn't take long to freeze again.
Any suggestions on how to debug this.
At the moment I'm trying to run away from the problem and trying a lightweight lubuntu system.
But sooner or later I will probably stick the MATE sdcard back in and fuss with this some more.