Since when has tcp/ip stack has anything to do with the browser (other than being a transport layer) ?
Maybe the context did get mixed up, maybe I missed something in your reply?
- I did
not say, the tcp/ip layer was responsible for the faulty display.
- I did say, that if you use on old system, and if it does not get updates, then never mind how up to date your browser is, you should not have anything connecting to the interment from within that OS, since it will almost certainly expose layers of the (potentially vulnerable) OS to the internet.
So, then if your OS is such old, it does not matter (IMHO) if the page can be displayed with any software under that OS => it shouldn't be attempted in first.
Also note: I have not stated that Joanna's OS falls into that category. I don't know that.