Have installed NW65SP2 overlay, full release of BM38SP2a and applied tuning parameters as per TID. The server seems to stop responding to proxy requests after about 24 to 36 hours of being up. Users get a 504 Gateway Timeout error in their browsers.

The server still seems to be communicating normally to all other services, however users are unable to surf anymore. A restart of the server resolves the issue.

Have checked the _IP small ecb count while in this "hang" state and everything seems normal.

Have also applied TCP654j.

Any ideas will be appreciated.