Yes, the users are having pages not load to completion, but often refresh with no problems. The items that hang seem random (images, .js files, or the html page itself).
I am finding several thread topics that seem to be similar\related. These include the SSL handshake problem with IE6 and the images not loading in IE6 (I'm look at the problem right now on notes.net). I have experienced both of these issues too at the same time as users are experiencing problems. Also, I am remote consoled into the servers which depict no sizable activity with disk, memory, or processor.
I have used several packet-sniffing utilities to try to figure out the problem with little success. Someone with a better knowledge of networking may have better luck. They are IBM Page Detailer, TracePlus, and HTTPWatch. Very interesting tools to play with in any case.
Here are a couple links to related topics:
http://www-10.lotus.com/ldd/nd6forum.nsf/55c38d716d632d9b8525689b005ba1c0/23406a1e97920a9f85256d5c0078a6f0?OpenDocument
http://www-10.lotus.com/ldd/nd6forum.nsf/55c38d716d632d9b8525689b005ba1c0/8e2aeac76a6d161e85256d270032e2de?OpenDocument