Yes... problems... The latest Internet Explorer Critical Updates released in these days, which stops malicous attempts of code being ran on unsuspecting systems and forbids credentials from being supplied in a URL, has been causing problems.
After applying the patches, I have found that I can no longer access certain websites. My Explorer is more instable than before... terrible!!! Too much problems with MS and its patches... why??
The URL patch has also been observed as being inconsistent. Some users were still able to supply credentials within a URL, when accessing a site which needs authentication before entry. I think we'll see soon a patch of this patch... horror!