The platform is the same as before (Linux 2.1.16 on an AMD K6-500 with 256MB ram). We did not change this. The only different is the network connection. We switched from 784KBPS SDSL from Northpoint to a co-location facility with multiple T3 backbones. T3=DS3=44.736 MBPS.
I will upgrade to an AMD Athlon K7-900 processor this summer. Right now, I'm having problems with my K7-900 setup and will stick to the K6-500 until the bugs are worked out. The K7-900 would be faster yet, but it tends to hang (in my lab) for some reason so I'm keeping the old, reliable K6-500 in production for now.
Glad you are finding the site faster