ssh error

["Bizhan Gholikhamseh (bgholikh)" <bgholikh@xxxxxxxxx>]

Hi All,
ssh version:
ssh -v
OpenSSH_4.3p1, OpenSSL 0.9.8g 19 Oct 2007

Occasionally we get the following error and connection is dropped:
auth 2 sshd[12051]: fatal: recv_rexec_state: ssh_msg_recv failed

Any help greatly appreciated.

Thanks,
--B