Speedtest.net is a valuable tool for checking that everything is working correctly on your internet connection, while the same test can be done manually it’s much more convenient to have it all come from one place.
Recently they redesigned their website with a lighter style, I think it works well, aside from the main design not much has changed regarding the interaction.
There aren’t that many people who feel comfortable replacing a part, or giving basic maintenance to a desktop PC, over the years PC parts have been made easier to be replaced, with only a few disassemble steps necessary to replace even the hardest component. Laptop computers have however been a no-go zone for many people who commonly replace PC parts, due to the complex disassemble instructions, higher risk of damage and general fiddliness due to the small parts. This guide is mainly for people who are familiar with PC part replacement/maintenance but haven’t had experience with a laptop.
During my testing of Windows 7 I have had almost no issues to report, the only things that have been of notice have been third party or driver related. Then there’s the permissions bug, this bug is so elusive that hardly anybody has reported it and nobody has a solution, not even me.
Update 1: It appears that as of build 7068 this bug may have been fixed, see comments below for details.
Update 2: There are reports the bug has reappeared in the RTM build, it can also occur in Windows Vista but slightly less often.
Update, September 2 2009: It has been mentioned below that this website has a possible fix and that it can fix both Windows Vista and Windows 7. I don’t get this bug any more on any of my machines so I am unable to verify it however.