MySQL 5.5.27 crashes randomly on centOS 5

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http://serverfault.com – I am using godaddy's dedicate server to host my web application, it's centOS 5(I have no idea why they are still using this.), I installed mysql in that server, everything was running OK since one day I got an report saying that the web application cannot connect to mysql, I checked and found out that mysql crashed, after restarting mysql, everything worked again. But the weird thing is that it will crash randomly, sometimes once in a month, sometimes once or twice in couple months. Please help me figure out what the problem is. The following is the most recent crash log from mysql. Thank you (HowTos)