Too answer your question neil ,yes it does.............i run both IE and firefox.
And the reason norton slows things down before it even gives you trouble is becasue just like AOHELL it is so memory intensive,in fact in my experience norton and AOHELL is about the worst combination you could ever have,another problem with norton is that even have uninstalled it,it still leaves active registry keys which are a right pain in the ass,and someone i know tried to tell symantec the vunerabilies of norton and they fobbed him off,so he wrote a program to expose them,what did symantec do ?.............hmmmmmmmm you would think they would plug them with new updates but no,all the did was write a patch to block this gentlemans program,why ?.,.........because it had so many holes they would have had to scrap it and write a totally new program.
I build systems for people for free(well wont say no if they wanted to give me some money),primarily because i hate to see people ripped off,and companies like dell,hewlett packkard and a few others do just that,and the cost,well put it this way and depending what you wanted,but i could build a state of art system for around £350,build time about an hour.
Anyway have built several systems,but 2 come to mind,both women......lol........have exactly the same system as mine,same connection to internet..........in fact the only difference is they had norton(why ?...coz it came in a nice box..... :lol: )............now they had several problems i dont,one they are always getting booted from msn and yahoo messengers,they have audio software(for musicians) that they couldn't use because norton didn't like it,and when started norton goes bananas,and one even had a conflict with a web cam.ended up taking norton off both machines
If i had a £ for every time i had took it off someone's pc,i could buy a brand new S55 ............lol