Ditto this problem for me. I am on Windows 7 x64 with IS 2009 SP2.Often the "Sign files in package" is incredibly slow. > 10 seconds for each file. Yes, my internet connection is fine and I have tried other timestamping servers.I don't bother anymore...
This occurred today on my Win7 SP1 x64 machine with InstallShield 2009 Professional. The culprit was C:\Windows\SysWOW64\mshtml.dll which apparently was updated by KB2962872.Uninstalled and IS worked again.
