Going readonly too frequently

[Muhammed Sameer]

Hey,

* Our server is going readonly atleast 10 - 15 times a day with the below error

<snip>
Jan 26 12:57:36 mailbox kernel: EXT3-fs error (device sdb1): ext3_free_blocks_sb: bit already cleared for block 53771686
Jan 26 12:57:36 mailbox kernel: Aborting journal on device sdb1.
Jan 26 12:57:36 mailbox kernel: EXT3-fs error (device sdb1) in ext3_reserve_inode_write: Journal has aborted
Jan 26 12:57:36 mailbox kernel: EXT3-fs error (device sdb1) in ext3_truncate: Journal has aborted
Jan 26 12:57:36 mailbox kernel: EXT3-fs error (device sdb1) in ext3_reserve_inode_write: Journal has aborted
Jan 26 12:57:36 mailbox kernel: EXT3-fs error (device sdb1) in ext3_orphan_del: Journal has aborted
Jan 26 12:57:36 mailbox kernel: EXT3-fs error (device sdb1) in ext3_reserve_inode_write: Journal has aborted
Jan 26 12:57:36 mailbox kernel: EXT3-fs error (device sdb1) in ext3_delete_inode: Journal has aborted
Jan 26 12:57:36 mailbox kernel: __journal_remove_journal_head: freeing b_committed_data
Jan 26 12:57:36 mailbox last message repeated 3 times
Jan 26 12:57:36 mailbox kernel: ext3_abort called.
Jan 26 12:57:36 mailbox kernel: EXT3-fs error (device sdb1): ext3_journal_start_sb: Detected aborted journal
Jan 26 12:57:36 mailbox kernel: Remounting filesystem read-only
Jan 26 12:58:04 mailbox kernel: __journal_remove_journal_head: freeing b_committed_data
Jan 26 12:58:05 mailbox kernel: __journal_remove_journal_head: freeing b_committed_data
</snip>

* Our kernel is 
2.6.18-182.el5

* Our OS is
Red Hat Enterprise Linux Server release 5.2 (Tikanga)

* We even tried fsck  but the problem persists


Regards,
Muhammed Sameer