Ugh, this is weird

When I'm on my laptop at home, I can't log into Livejournal.  I log-in, it brings me to a page where I think I can access something but when I click on, say, my friends list, I get brought back to the log-in screen.  I took the laptop to the library yesterday morning and had no issues getting on and I can access LJ at home through my iPhone but not my laptop at home.

WTF?  Anyone have any ideas of what I can do?