[Zope] LocalFS Upload Timeout

Hi all, I am using LocalFS to allow users to upload files to the webserver. I am get a Zope timeout error when the upload file is larger than 20MB. The system has about 128MB of available RAM and 400MB Swap space. Can anyone give me some suggestions on what might be happening here? System Info: --Pent III 800Mhz --Debian 2.4 --Zope 2.5.0 Thanks in advanced for any suggestions, MT