No problems recently. A few months ago I had to change my Firefox to the ESR version so that I could use Java. Something about Firefox not being compatible with it. Since I did that everything has been good. I do have the continuing problem with my flashplayer stopping which is kind of annoying, but I can usually work around it.
Are you on a wireless network or a mobile device when you get dropped? I've noticed that some sites aren't very mobile device compatible and you end up getting bumped a lot. That also happened when my router was going bad.