The xm list show vm's and i can reconnect throught xm console.
Files in /var/log, i thinks dont have anything special.
I get the source at 3 month ago.i'll send to you /var/log/messages
Aug 14 03:21:51 localhost -- MARK --
Aug 14 03:32:35 localhost kernel: kernel unaligned access to 0xe000000011ead21e, ip=0xa0000001008bae11
Aug 14 03:32:35 localhost kernel: kernel unaligned access to 0xe000000011ead21e, ip=0xa0000001008baed1
Aug 14 03:32:35 localhost kernel: kernel unaligned access to 0xe000000011ead21e, ip=0xa0000001008baf60
Aug 14 03:32:35 localhost kernel: kernel unaligned access to 0xe000000011ead22e, ip=0xa0000001008bb1e0
Aug 14 03:32:35 localhost kernel: kernel unaligned access to 0xe000000011ead22e, ip=0xa0000001008b96c1
Aug 14 03:55:02 localhost kernel: kernel unaligned access to 0xe000000011eae01e, ip=0xa0000001008bae11
Aug 14 03:55:02 localhost kernel: kernel unaligned access to 0xe000000011eae01e, ip=0xa0000001008baed1
Aug 14 03:55:02 localhost kernel: kernel unaligned access to 0xe000000011eae01e, ip=0xa0000001008baf60
Aug 14 03:55:02 localhost kernel: kernel unaligned access to 0xe000000011eae02e, ip=0xa0000001008bb1e0
Aug 14 03:55:02 localhost kernel: kernel unaligned access to 0xe000000011eae02e, ip=0xa0000001008b96c1
Aug 14 04:02:35 localhost kernel: kernel unaligned access to 0xe000000011eade1e, ip=0xa0000001008bae11
