Safaria and Chrome are working fine on this iMac. But Firefox has serious problems connecting to google domain web sites. Other web sites work fine. But if trying to connect to gmail, google.com, google drive or google maps the firefox hangs for a long time saying "connecting". The problem is not deterministic, but appears to always happen at startup. I tried to debug this using firefoxDeveloperEdition using network monitoring. I could only get the problem to happen once and the network monitor did not reveal any long lasting requests. The request all completed in less then 500 msec but the total query took around 30 seconds. Any ideas what is going on? I have done a reset and a safe start without any success.