It happen since 30th of October 2009. Server keep abend or re-boot itself. -I use BM3.8 Sp5, unfortunately BM3.8 no more support. finally We upgrade to BM 3.9 Sp2 on last week. It happen 2 times now server re-boot on omday around 9:00am. and it abend on yesterday around 4:30 pm. message repeat and repeat until 4:36pm it re-boot.

Any idea? what will it casue?

From sys$log.err, it show

11-18-2009 4:32:28 pm: PROXY-5.13-8
Severity = 1
Novell Proxy encountered a fatal error: RsStateNotImplemented callback was called for a request in state HTTP Client Waiting For Entity Data

11-18-2009 4:32:29 pm: PROXY-5.13-8
Severity = 1
Novell Proxy encountered a fatal error: TCPGetSendCallBack fragment offset does not match

11-18-2009 4:32:29 pm: PROXY-5.13-8
Severity = 1
Novell Proxy encountered a fatal error: TCPGetSendCallBack fragment offset does not match
:
:
11-18-2009 4:32:29 pm: PROXY-5.13-8
Severity = 1
Novell Proxy encountered a fatal error: Detected a Freed IP Cache Node: 0x87B7B84, Original Freer = 0x9A2955FD

11-18-2009 4:32:29 pm: PROXY-5.13-8
Severity = 1
Novell Proxy encountered a fatal error: Detected a Freed IP Cache Node: 0x87B7B84, Original Freer = 0x9A2955FD

11-18-2009 4:32:32 pm: PROXY-5.13-8
Severity = 1
Novell Proxy encountered a fatal error: RES_DeregisterIdleClientConnection did not find the connection
:
:
11-18-2009 4:32:37 pm: SERVER-5.70-4631
Severity = 3 Locus = 18 Class = 6
WARNING! Server XXXX experienced a critical error. The offending process was suspended or recovered. However, services hosted by this server may have been affected.
:
:
11-18-2009 4:32:40 pm: PROXY-5.13-8
Severity = 1
Novell Proxy encountered a fatal error: TCPGetSendCallBack fragment offset does not match

11-18-2009 4:32:40 pm: PROXY-5.13-8
Severity = 1
Novell Proxy encountered a fatal error: TCPGetSendCallBack fragment offset does not match
:
:
11-18-2009 4:33:31 pm: PROXY-5.13-8
Severity = 1
Novell Proxy encountered a fatal error: RES_DeregisterIdleClientConnection did not find the connection

11-18-2009 4:33:31 pm: PROXY-5.13-8
Severity = 1
Novell Proxy encountered a fatal error: RES_DeregisterIdleClientConnection did not find the connection
:
:
11-18-2009 4:36:25 pm: SERVER-5.70-4
Severity = 4 Locus = 18 Class = 6
WARNING! Server TRH5-NW has experienced a critical error. It is going down in 2 minutes. Save your files and logout.