Comment 5 for bug 314713

I've reported the same problem.
I'm on a dual-boot P4 desktop and, interestingly, connected via a D-Link router (DSL-G624T).
While under my Ubuntu 8.04 LinkedIn is so sluggish and almost unusable, under WindowsXP all seems to work smoothly.
I haven't tried with any other browser than Firefox 3.0.