This browser thing has puzzled me. Before I had installed cssu testing and both the microb and opera were unable to open properly my email providers page so I had to use Fennec (not 17 but the older version). Now I have enabled cssu devel and I have done uppgrade on terminal. My microb can now open the email providers page and there are much fewer pages that won't open because cedrtificate problems. Now I mainly use microb which I avoided before. Don't know what is different compared to previous installs but I'm glad. Maybe it was that I did something wrong before and right this time.

And thanks for information. If I understood correctly the microb security is yet unsolved issue also with Leste? I have now used netsurf 3.8 with ED which is incredibly fast but lacks some stuff but fills quite good my needs.