Missing Data.Map library? GHC 6.8.2 under OS X

I seem to be having trouble using GHC 6.8.2 and OS X (10.5). It seems that any use of anything from Data.Map results in a link error like Undefined symbols: "___stginit_containerszm0zi1zi0zi1_DataziMap_", referenced from: ___stginit_Main_ in tst_parse.o ld: symbol(s) not found Has anyone else seen this? I tried reinstalling the package from haskell.org, but no luck.