Tuesday, May 3, 2016, 12:15:21 PM, you wrote: DL> After update from centos 6.6 to centos 6.7 and reboot it, I have get a DL> lot of this error into /var/log/messages: >> May 3 11:27:20 s-virt kernel: EDAC MC0: CE row 2, channel 1, label >> "": (Branch=0 DRAM-Bank=2 RDWR=Read RAS=6093 CAS=896, CE Err=0x10000 >> (Correctable Patrol Data ECC)) Hi Dario, I had a similar case in the past. I had a brand new server that seemed to be running fine. After a kernel update, I gor lot of error messages in /etc/messages. That particular kernel update implemented additional error messages that were related to the motherboard chipset. It appears that new boards with new chipset run fine with existing kernel. As soon as kernel updates incorporate special features of these chipsets, you might get such messages. I returned the board under warranty. The board manufacturer informed me that a memory controller was faulty. The board had the hardware error from the beginning. The new kernel only revealed an already existing problem. You may want to check first if the hardware problem comes from memory or motherboard. best regards --- Michael Schumacher