After talking to chris waterson, I just figured out that for PL_Hash, I need to keep the strings that I use as the key around. I am not doing that. My Problem... dp Suresh Duddi wrote: I am using PL_Hash to maintain a has table keyed by strings (filenames). Here is what I find: Get(y:/moz/mozilla/dist/WIN32_D.OBJ/bin/components/ucvlatin.dll) FAILED. Get(Y:/moz/mozilla/dist/WIN32_D.OBJ/bin/components/ucvlatin.dll) FAILED. Put(Y:/moz/mozilla/dist/WIN32_D.OBJ/bin/components/ucvlatin.dll) succeeded. Get(Y:/moz/mozilla/dist/WIN32_D.OBJ/bin/components/ucvlatin.dll) succeeded. Get(Y:/moz/mozilla/dist/WIN32_D.OBJ/bin/components/ucvlatin.dll) succeeded. <bunch of other Gets and Puts> Get(Y:/moz/mozilla/dist/WIN32_D.OBJ/bin/components/ucvlatin.dll) FAILED. Put(Y:/moz/mozilla/dist/WIN32_D.OBJ/bin/components/ucvlatin.dll) succeeded. The source file that does the hashing is pretty simple: mozilla/xpcom/src/xcDllStore.cpp I am perplexed at how after some use, suddenly HashTableLookups() would start failing. Am I doing something wrong ? dp

Using nsHashtable

SCC, can you mark this VERIFIED-FIXED after regressing it?

Regressed. All ok.