Reducing Network Traffic

Hello All,

I have Domino server 6.5.2 on SuSE for testing. I am doing some initial
study for *network* traffic between Domino server and notes client.
I found that with compression enabled
1. The traffic for the first login is close to 2 Mb
2. For the second login it came down to 1 Mb approx
3. And then for all next subsequent logins it was close to 60kb

Does anyone knows why it is so high for the second login. I can understand
that it will be higher for the first login, but what is special in second
login? Does it create some cache after second login? Can some one explain
me the reasons for this please. I am new to Domino/Notes.

Also, it there anyway to install a new client in a such a way that from
the first login itself the network traffic stays *below* 100kb? Please
advice

Thanks in advance.

yogesh