A quick google gave me this, seems like the error was found in an earlier kernel version and is back in 2.6.28-7. http://bbs.archlinux.org/viewtopic.php?id=55214 Best regards Fredrik Eriksson > My server's been getting a load of weird messages in my dmesg and log > files recently: > > Mar 16 06:38:27 darsys9 kernel: ata4: EH complete > > > And sometimes also: > > Mar 16 06:38:27 darsys9 kernel: ata4: EH pending after 5 tries, giving up > > > Anyone know what this is about and/or if there's some recent upgrade > that might be causing it? I googled up some info about it (including a > thread about it on the Arch forum), but all the info I could find is > older and says that (at the time) the cause was a particular kernel > version, and that upgrading the kernel would make it go away. > > But as I'm up-to-date with the current kernel, that's obviously not the > issue now. > > Any info appreciated! > > TIA, > > DR >