[Ilugc] An Error from IBM x3400 server

[Zico]

Hi, one of my server is showing this message continuously in the terminal...

*
*
*Message from syslogd at debian at Mar 17 00:51:59 ...*
* kernel:[647293.522324] EDAC MC0: UE row 2, channel-a= 0 channel-b= 1
labels "-": (Branch=0 DRAM-Bank=6 RDWR=Read RAS=7772 CAS=0 FATAL Err=0x4)*

I cannot understand what kind of problem is this...and why it is showing.
Can you suggest me something?
-- 
Best,
Zico