Lion gives proxy problems (no https)
At work I can only access the web via a proxy server, using my MacBook Pro. After upgrading to Lion the internet connection via proxy at work became terribly slow and https sites became unaccessable ("proxy server denied..." or something like that). At home, without proxy, these problems do not exist.
I've reinstalled Snow Leopard. Everything workes fine again. What might be the problem here with Lion?
Mac Pro, Mac OS X (10.6.6)