Hi. I've searched on this forum and it looks like many people are having trouble accessing certain pages. For me, the only page that I've found is blocked is when I try to open a yahoo email attachment. I use Firefox. When I click to open the attachment I get a white screen. I've disabled my antiphishing, all of my parental control is disabled, I've added yahoo mail to the white list.
I've also enabled my cookies and scripts but this sent a flood of bitdefender popups on my screen, asking to add or deny this cookie. I added, then refreshed my yahoo mail and the page was jumbled and "not normal". As it didn't seem to work and I couldn't see my yahoo page the way it should, I disabled both cookies and scripts again.
I've written bitdefender tech support twice and after a week of no response I'm here. Does anyone else have this problem-with yahoo mail attachments? Other people have mentioned problems with youtube, or other sites. Youtube works fine for me, and this is the only problem I've found...but its a huge problem if I can't open attachments in my email. 
If someone could help me, I'd greatly appreciate it!!
Thanks.
-john