Safari cannot establish secure connection or load images
MacBook Pro 5,5 Intel Core 2 Duo 2.26 GHz
OS 10.6.8
Safari 5.1.10
This started a few days ago out of the blue. When loading a new webpage some or all images and buttons would not load, sometimes I would get the "cannot establish secure connection" message.
Facebook has problems regularly and is where I first noticed it, other sites much less often.
Using Firefox or Chrome I have no issues.
I tried clearing the Safari cache and disabling extensions (iGetter and Last Pass) but this did nothing. Sometimes relaunching helps, sometimes it does not. I also reinstalled Safari, no change.
Ideas?
MacBook Pro, Mac OS X (10.6.8)