Hello
Hello,
I have had the same problem as you for a couple days. I don't have adblock plus either and nothing seemed to work and I was getting mad, until my RL hubby (he is the one who has a clue about PCs, I am just the stupid girl who has fun on them ;-)) suggested I tried to open Secondlife.com with Internet Explorer instead of Firefox I normally use.
It works with Internet Explorer. So, maybe if you are a Firefox user, you might want to see its parameters. Maybe some have changed. RL hubby said he would have a look at what needs to be done later. For now I am happy, I can access my account, and that's the most important ;-) I hope it is the same for you!
I hope that was useful and I was clear (sorry English isn't my mother tongue). Good luck!
Hig.