the internet on my macbook sucks?!

Non-responsive DNS server or invalid DNS configuration can cause long delay before webpages load

This forum if for the macpro desktop computer, and your question would likely get a better answer in a handful of other sections that have more hardware in common with your macbook. That said, I may be able to help. What does your network look like? What devices are on your network when you are having problems? How is your macbook connected to the network (wireless g/n 2.4/5 ghz), if it is wireless what kind of security are you using on your network? What kind of wifi card does your HP have, if it is a card that "broadcasts" this can cause problems? When you go to System Preferences > Network > little gear thingiee under the list of network interface devices > Set Service Order... What devices does it show and what order are they in? Is there a "service" called "bluetooth DUN"? Lastly, go to System Preferences > "security and privacy" > firewall, is your firewall on, if it is turn it off (and leave it off)? Then go to System Preferences > Sharing, unclick the lock, go to internet sharing, uncheck every thing, then go to bluetooth sharing, check the "use pairing for security", then click the lock in the courner, then click it again, enter your password, uncheck all of the boxes next to file sharing, web sharing, printer sharing, etc, then go to your browser and reset it...all of it, dont keep your history cookies, bookmarks, all of it. Close your browser. Shutdown your mac. Hold the shift button on ur mac while you press the power button on your mac, continue to do so til u see a progress bar under the apple (if u dont see it start over, at the shift+power button). When the login screen comes back up it should say "safe mode" under the apple above where you enter your pw to login. Login, then hold the option key while u open ur browser, it will ask u if u want to start fresh, or possibly if you want to start ur browser in safe mode, depending on the browser. Click yes. See how she goes.
A word of warning or advice (depending on how you take it) WEP secured wifi networks are not secure, use WPA. Don't use any "easy connect" garbage on your router. If you do, this can be causing your problem. This is because there is a delay while the router tries to classify your computer. MS gets around this by making sure that the computers connection to the router is insecure and easily traceable (and hackable)... But it sure is fast aint it. Report back if you still have issues with the answers to the questions I asked initially.

Do you have from the problem described in that article?

If not, what problem exactly do you have?

Yes, with a 15" MacBook Pro, as well as a 13" MacBook. My best guess is a router misconfiguration, a bit of interference, and the mixture of encryption protocols/speeds being used on the network... If its not the Dns issue u outlined of course. That said, it could be an ipv4/6 translation issue, but I doubt it