Have users who are seeing the message “Click to activate and use this control” on some web sites?

Microsoft’s most recent Windows Update including a “patch” to Internet Explorer, that disabled some of the functionality it had for automatically running embedded controls (ActiveX, Flash, etc.). This is due to a patent dispute that Microsoft lost (is losing?) to Eolas Technology regarding this technology.  Web developers have a number of workarounds to fix this problem, but until every site implements it, users will be stuck with thtis behavior.

Luckily, Microsoft has a patch out that reverts Internet Explorer back to its earlier behavior of automatically running these controls. Note that they do claim the patch is temporary and will not be available for future security updates, so get it now!