Cannot connect to https or encrypted sites (banks, pay-sites etc)
Since two weeks I can no longer connect to most https sites.
Some are very slow but finally show up after a minute or two (like finance.yahoo.com). One bank site (Interactive Brokers) allows me in, albeit very slowly but then they are only half functional. Some payment sites appear unformatted. Others just hang like my bank site. I get into Apple Support https site but then it hangs when I sign in. Looks like a timeout issue. Some sites have more patience and I can go further in, others not.
This happened on my 17" MacBook Pro 8,3 with Lion (it is Raided onto two SSD drives, the second having replaced my DVD). The whole system worked flawlessly for about a year. I upgraded to Mountain Lion hoping this might reset things as before.
This happens with Safari, Chrome or Firefox and also with Internet Explorer from a VirtualMachine with WMware, on the same MPB 17 machine.
This happens with my wireless router as well as with a wireless SimCard using a different provider.
I did the usual tricks of clearing caches etc, resetting Safari and the others both before and after upgrading to MLion. I had no Firewall on or Parental controls.
I tried to make a new location network, and I tried to change the MTU to a different value. All to no avail.
THIS DOES NOT happen on two other machines in the office: a Mac PRO and on a MacBook AIR 10.6.7 and Safari 5.0.4 which briskily open all those sites.
Thus I conclude that it may not the browsers, as they all do not work on the MBP but work on the other machines; it is not the wireless networks as both do not work with the MBP but they do work with the other machines. Likewise for the ISPs.
It started right after my bank had a major down time after putting up a new site and software, so I initially thought it was their fault. And since then it started affecting also the other sites. Thus I thought it may be a bug within the system, but I have now finished all my ammunitions and now need help.
I noticed that similar problems happened before in this community, as I have seen posts dating a while back and some were resolved with various tricks which have not solved my problem.
Anybody with a suggestion? Thanks 😟
gp
PS I should add that everything else seem to work ok, except that in one of my datafeeds where I place orders (trading platform) there seems to be a marked delay 2-3 seconds whereby these orders were instantaneous before..)
MacBook Pro (17-inch Early 2011), OS X Mountain Lion (10.8.2), Raided two SSD inside 16Gig RAM