same results here: mozilla (1.5) works fine, but is veeeeeeeery slooooow. ie gets the certificate and then stops doing anything. after disabling the synrate-limiter ie (6.0) works fine and it's really fast. the webadmin interface is even faster compared to version 4.702.
Synrate-limiter fix worked for my systems. Very strange problem indeed, and it was worse using IE 6.0. I think mozilla has a longer timeout period which is why it would work half-way.
