Reproducible Crashes on PS3 since V1.22

PS3 totally crashes when:

• building a new wolrd, exploring the whole world, trying to save or during autosave (this error happens after a few hours playing in survival, in creative mode it happens earlier. I belive it has something to do with the assignment of the RAM memory of the PS3 (may be memory overflow)).
  The bug causes freezing while showing the save game bar.

• enter as second player and try to sing into your PNS account causes freezing of the PS3.

Both causes a major crash of the PS3 causing a system recovery when rebooting the system.
Both errors are happening every time when trying, so they are strictly reproducible.
Both are happening on two different PS3 models (PS3-J and PS3-K).

Both errors came together with the 1.22 update and are still existing in 1.23 and 1.24.