MS06-013 Cumulative Security Update for Internet Explorer has been released. Known issues are documented in the following KB article

MS06-013: Cumulative security update for Internet Explorer

Note that this cumulative update issues a new version of MSHTML.DLL and the solves a problem that was caused by Internet Explorer ActiveX update - 912945.

Those affected by the above problem (refer my previous blog post) may need to register the DLL file again. Type regsvr32 /i mshtml.dll in Start, Run dialog.