% ./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 -><-