Re: IUrlHistoryStg Release() not called

Well the line I used to check for the download manager used
SID_SDownloadManager, and I couldn't find the same for IUrlHistoryStg:

if (guidService == SID_SDownloadManager && riid ==
IID_IDownloadManager)

there doesn't seem to be any SID_SUrlHistoryStg. Do you know of any?

Assuming it's a bug in WebBrowser, what should I do? Should I call
Release() *twice* on my class when I'm shutting down?

.