cleburneslim,
Download a file from the magnetmix link in post #2 & see what speed you get.
Who is your ISP?

succi,
What happened when you downloaded a magnetmix file...fast or slow?
Did you delete the preferences folder?
If the magnetmix files download slowly, it could be that your ISP has started throttling p2p? I had a look on Google & it looks that way (I can't read Portuguese so there's a bit lost in translation)

http://translate.google.com/translate?hl=en&sl=pt&u=http://www.forumpcs.com.br/viewtopic.php%3Ft%3D142807&sa=X&oi=translate&resnu m=1&ct=result&prev=/search%3Fq%3Dvirtua%2Bmega%2Bflash%2B%2Bp2p%26hl%3 Den%26lr%3D%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-USfficial_s%26hs%3D7C3%26sa%3DG

http://translate.google.com/translate?hl=en&sl=pt&u=http://www.marfisa.org/artigos/p2p_virtua.html&sa=X&oi=translate&resnum=3&ct=resu lt&prev=/search%3Fq%3Dvirtua%2Bmega%2Bflash%2B%2Bp2p%26hl%3 Den%26lr%3D%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-USfficial_s%26hs%3D7C3%26sa%3DG

If you use Google to look for virtua mega flash - p2p you'll find more info.
You could try changing to a higher port (eg 64049) but honestly, I don't know if that would help. If you want to try, in LW tools > options > advanced > firewall config. On this page, change LW's listening port & port forwarded if you've set up port forwarding in your router. Change any port numbers allowed through a software firewall also. All port numbers have to be the same!