Exception "Out of memory" sometimes..

Hello!
I have a web server (a java servlet - vm version 1.4.1_01_b01) that needs about 1024M of memory (i uses the option -Xmx1024M) working with tomcat (3.3.1) over a pentium IV with linux (red hat).
When the users uses my server the memory that the servlet needs increases until 1024M. When memory is over 1024, java automatically manages it and all works right.
I have changed my server to a powerful machine (2 intel xeon processor with option siblings, so 4 virtual processors) and linux system (vm is the same and tomcat is version 4.1). But now, when memory is over 1024, a "out of memory exception" is dispatched (i uses -Xmx1024M too) so i have to reset my server everyday!
Does someone something about a posible bug about this strange thing? will it be something about using 2 processors?
Thanks in advance!! :)
Natalia

Thanks for your response, but i think that it isn't the problem. I'm currently using Tomcat and i have checked that the request to my server are right managed by Tomcat 4: There are several threads in the differents processors. I think i haven't to cluster my servers, Tomcat distributes the request right.
Am i right?
Anyway, thanks!
Any idea else about the problem?
Thanks in adavance! :)
Natalia

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Since this forum is to discuss: Visual Studio WPF/SL Designer, Visual Studio Guidance Automation Toolkit, Developer Documentation and Help System, and Visual Studio Editor.
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------------ start of code snippet -----------------------------------------------------
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http://forum.java.sun.com/thread.jspa?threadID=690812&tstart=0
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