programs compile, but fail to run on Linux 2.6.11

% ./Main
OS allocated a heap in high memory (>0x80000000)
    which breaks this program's run-time system.
  hpStart=0xb7e03008, hpEnd=0xb7e78308
%

Fresh compile of nhc98-1.18, with ghc 6.4.

I assume this could also be a libc issue, if it's defining "heap" as
addresses malloc() returns, which could be done through anonymous mmap()s.
I'm running glibc-2.3.5

Are there any other details I should provide?

-- 
Aaron Denney
-><-