[plt-scheme] Kernel Panic

Hi All,

I have been running PLT Scheme 4.1.2 on Ubuntu 8.1 and have been
having a few kernel panics.  Following is the trace:

May  7 12:26:11 wbatweb03 kernel: [848774.126339] mzschemecgc invoked
oom-killer: gfp_mask=0x1201d2, order=0, oomkilladj=-17
May  7 12:27:28 wbatweb03 kernel: [848774.126345] Pid: 5171, comm:
mzschemecgc Not tainted 2.6.24-23-server #1
May  7 12:27:28 wbatweb03 kernel: [848774.126347]
May  7 12:27:28 wbatweb03 kernel: [848774.126347] Call Trace:
May  7 12:27:28 wbatweb03 kernel: [848774.126369]
[oom_kill_process+0xf6/0x110] oom_kill_process+0xf6/0x110
May  7 12:27:28 wbatweb03 kernel: [848774.126373]
[out_of_memory+0x15e/0x270] out_of_memory+0x15e/0x270
May  7 12:27:28 wbatweb03 kernel: [848774.126377]
[__alloc_pages+0x399/0x3d0] __alloc_pages+0x399/0x3d0
May  7 12:27:28 wbatweb03 kernel: [848774.126382]
[__do_page_cache_readahead+0xe0/0x210]
__do_page_cache_readahead+0xe0/0x210
May  7 12:27:28 wbatweb03 kernel: [848774.126388]
[nfs:filemap_fault+0x28e/0x570] filemap_fault+0x28e/0x390
May  7 12:27:28 wbatweb03 kernel: [848774.126392]
[__do_fault+0x6c/0x440] __do_fault+0x6c/0x440
May  7 12:27:28 wbatweb03 kernel: [848774.126397]
[handle_mm_fault+0x1c1/0x800] handle_mm_fault+0x1c1/0x800

PLT Scheme is being executed on a web server using CGI with a large
number of simultaneous connections.  Thank in advance for any help.

Arend