Why is my internet so F****** slow????

[fishbowl88]

So heres my story. I have an AMD quad core running windows xp 32-bit that has 4 gigs of RAM and a 100 Mbps NIC. My internet is slow, but only in certain circimstances. If i get on youtube it takes 5-10 minutes to load a 2 min video in 720p. Its the same with pulling up regular webpages, it just takes to long to load them. On the other hand, i can play LOL or LOTRO fine, and on my xbox i get no lag at all playing COD on live. Ive got verizon fios through which i am promised 25 Mbps down and 5 Mbps up. Ive done several several speed tests and they all say im getting 25 down and 4-5 up. Now my step mom has fios also, through which she gets 25 down and 5 up (ive tested it). Now if I pull up a video on her computer I can load a 2 min video in 720p in like 30 seconds. WTF???? What is going on here? Any ideas?

 

[mgsfreak]

internet explorer is a terrible browser, i had the same shite, try chrome or firefox, im sure that will sort it