Hmm. The main site is quite large, with the front page at about 200kB or something, but loads in about 5 seconds on my 2Mb connection (much of that waiting for Digg or YouTube, it seems). But when selecting topics on the forum it takes about 5 seconds again to load, where I’d expect it to take about a second, as it does here. After all, it’s just a few kB compared to the main site.
Thanks for investigating though, pravin – very much appreciated.