[Serusers] kernel: Out of Memory: Killed process 3780 (ser).

Hi, We have had a strange crash in the SER server we use. The load was not that big - around 10 users being served at that time. All of a sudden, the server stops responding and reports the following error in /var/log/messages: Feb 4 14:41:35 sip kernel: Out of Memory: Killed process 3780 (ser). Feb 4 14:54:52 sip kernel: Out of Memory: Killed process 3857 (ser). Feb 4 14:58:08 sip last message repeated 10 times Feb 4 15:02:17 sip kernel: Out of Memory: Killed process 3860 (ser). Feb 4 15:13:32 sip last message repeated 66 times [continues.....] Has someone else met this before? Jaime ******************************************************************************* Important. Confidentiality: This communication is intended for the above-named person and may be confidential and/or legally privileged. Any opinions expressed in this communication are not necessarily those of the company. If it has come to you in error you must take no action based on it, nor must you copy or show it to anyone; please delete/destroy and inform the sender immediately. Monitoring/Viruses Orange may monitor all incoming and outgoing emails in line with current legislation. Although we have taken steps to ensure that this email and attachments are free from any virus, we advise that in keeping with good computing practice the recipient should ensure they are actually virus free. Orange PCS Limited is a subsidiary of Orange SA and is registered in England No 2178917, with its address at St James Court, Great Park Road, Almondsbury Park, Bradley Stoke, Bristol BS32 4QJ. *******************************************************************************