Hello, I'm running a 2.4.20-8smp RH9 kernel and occassionally get the following error reported to syslog Sep 12 07:45:14 nfs0020 kernel: EXT3-fs error (device sd(8,33)): ext3_free_blocks: Freeing blocks not in datazone - block = 2251915074, count = 1 Sep 12 07:45:14 nfs0020 kernel: EXT3-fs error (device sd(8,33)): ext3_free_blocks: Freeing blocks not in datazone - block = 806949550, count = 1 Once this has occured, some files have IO errors and a fsck deletes them. The hardware being used are Dell 2650s with 2 PERC 4DC and 4 PowerVaults configured in joint bus mode. The MegaRaid driver being used is 2.00.7 Any help would be greatly appreciated. Thanks Chris L