If you're talking about loading pages hanging for long periods of time, I experience it 100% of the time when using Internet Explorer, with an average page load of over 60 seconds and posting a new thread taking about 3 minutes on a nominal 56k dial-up.
In Firefox, the pages only take about 10 seconds to load and a new thread takes about 20 seconds to post, but I have had connection drops when browsing the board with Firefox if I also have Yahoo Messenger open. (I have had no crashes so far using Firefox and the resource-light Windows Messenger.)
In the past, TT said that some of the board slowdown was caused by search-index "spiders," but I think he changed the coding to eliminate them, which sped things up at the time. I do not know the reason for the current underperformance with Internet Explorer, however.
Best of luck,