Twitter.com response time

I just did a couple of tests with host-tracker to get an idea of the response times of the Twitter website.



Test 1
Received responses : 37
Average response time : 1.93 sec

Test 2
Received responses: 34
Average response time: 1.92 sec

Test 3
Received responses: 35
Average response time: 1.09

Test 4
Received responses: 36
Average response time: 1.17

I have the impression that when I launch Twitter.com myself, it takes more time to load.

Unfortunately the uptime statistics for Twitter.com at pingdom have stopped working from August 7, 2007.

Does anyone else know others tools monitoring the availability or response times of Twitter.com ?