FOSS gamedev and creative worlds

I got a system freeze second time for these two days because of my minetest client. I'm using the latest dev version. Here's my debug.txt:
http://paste.pocoo.org/show/529884/
I can't see what was in the console that time because I had to reboot my system.
Using gentoo amd64 if that matters.

Pastebin says: "Unknown Paste ID!"

sfan5 wrote:Pastebin says: "Unknown Paste ID!"

Okay, I'll reupload it.

Current paste is not only for the freeze moment because I've already played after that moment ^_^

hmmm... I had a look at your paste but can't see any errors of any sort in there, are you sure that was the whole log?

No, I'm not. I was unable to paste the last log because I've played one more time after the error. When it happens again, I'll paste the full log.

Finally!!! I'm not alone with these freezes!!

The best I know is the freezes happen due to a graphic card problem. I've never found the real problem but try to launch the game with gdb to see what happens.
(It's also the only game in my computer that make the system freezing.)