I have recently noticed that whenever I click a HTTP link in an application (my mail client for example which is Windows Live Mail), My standard browser opens like only 15-20 seconds later. It also happens from other applications like Skype.
Now I've also noticed that an e-mail link responded with the same time (about 25 seconds!) before the "new mail" window opened. I clicked an e-mail adress in a PDF using Foxit Reader.
This happens only once per system boot as far as I know. The subsequent times it is way more responsive.
It also does not matter whether the receiving application already had a process running or not.
Even opening a new instance of the receiving application actually happens faster than it takes for the link to "arrive". That is, if I click an http or email link somewhere and then open my browser or mail client, the latter open more quickly than the thread that gets opened from the link.
Update: I think I have found the culprit!
The culprit did not appear to be something starting up with the system. It is something that starts whenever I click any kind of link (mailto, hyperlink, ...). The culprit is citrix receiver. This is something that I need to connect to a virtual citrix desktop from school. All of my classmates have this application too, but they don't have the same problem.
The problem is, it starts up with every link I click. Once it is open and done doing whatever it tries to do, it remains open and everything is normal speed again. But when I close the program from the system tray, the first link clicked will be slow again. Note that when waiting for a link, it immediately finishes upon closing the newly opened instance of citrix receiver (the one that "hangs")!
I do not know why it shows this behaviour, and re-installation changed nothing. Would anyone know how to prevent this from happening? I really need it, unfortunately... And I prefer not to make it boot with Windows.