If you download hotfixes on a regular basis, this may be old news for you, but if not, you may find use in the below.  Most, if not all recent hotfix articles contain the means to obtain the hotfix electronically, without having to call into support...

THE Ops Manager…  Here’s my thousand words:

Recently, I ran down an issue with very frequent crashes occurring on one of my customers’ MOSS 2007 x64 Index servers.  Every time it would attempt to crawl virtually any VSD file in the farm, we would experience a crash in the daemon (mssdmn.exe...