Internet is working VERY slowww.....

Well both my Safari and Firefox is working wayyyy too slow. I actually timed how long it takes to load up mac forums front page after my internet starts up (google homepage). Safari took 1 minute and 49 seconds. Firefox took 58 seconds. Each page I go to takes this long or longer, no joke. It use to take me just a few seconds to have mac forums fully loaded. I had a friend over with his macbook, older than mine, slower processor and less ram than me, his internet speed blew mine away, on my own network!! So i know for sure something is wrong with my computer. It is less than a month old. I am new to mac so I dont know exactly what is wrong and my friend could not figure it out either. I am having a bachelor party in about a month and 2 of my cousins were at my house on my computer looking for certain "girls" for my bachelor party, I am thinking maybe thats what messed something up?? I don't know. Any help would be great. Oh, and I also did a speed test and that is running fine aswell, my DL and UL speed is above average.

Thanks
-Nick

Are any other pages slow to load or just the m-f page?

everything is slow to load.. Internet is just very very slow... should I use some kind of cleanup program??

Download Onyx and clean caches and run maintenance programs for starters.