deploy failing- error msg :session down

[Jagan Padmanabha Pillai -X \(jpadmana - Insight Solutions, Inc. at Cisco\)]

 
Hi All,
My build is failing at deploy command. Sometimes it works fine,
sometimes it fails. The error msg says "session down". 
Any suggestions ??
 
[INFO] 01 Mar 2006 16:31:09,471  - [deploy:deploy] 
[INFO] 01 Mar 2006 16:31:11,700  - Uploading:
scp://xxxxx/auto/nm-maven1/repository/xxx/xxx/xxx/1.0/xxx-1.0.pom 
[INFO] 01 Mar 2006 16:31:13,352  - 647/647b 
[INFO] 01 Mar 2006 16:31:13,353  - 647b uploaded 
[INFO] 01 Mar 2006 16:31:13,419  -
------------------------------------------------------------------------
---- 
[ERROR] 01 Mar 2006 16:31:13,426  - BUILD ERROR 
[INFO] 01 Mar 2006 16:31:13,427  -
------------------------------------------------------------------------
---- 
[INFO] 01 Mar 2006 16:31:13,433  - Error deploying artifact: Error
performing commands for file transfer 
[INFO] 01 Mar 2006 16:31:13,433  - 
[INFO] 01 Mar 2006 16:31:13,433  - session is down 
[INFO] 01 Mar 2006 16:31:13,434  -
------------------------------------------------------------------------
---- 
[INFO] 01 Mar 2006 16:31:13,434  - For more information, run Maven with
the -e switch 
[INFO] 01 Mar 2006 16:31:13,435  -
------------------------------------------------------------------------
---- 
 
Thanks
-Jagan