Fox has that problem sometimes. I run the newest version. It can be great one day, and piss you off the next. A lot of it has to do with your computer's memory. FF is a tremendous drain on DRAM memory. It also has to do with Internet traffic. But I've noticed that even if I throw in the towel and switch back to IE during those lag times, there's no improvement. For me, I'm thinking of doubling my SDRAM memory soon. Maybe that would help.