The Internet is so big now, and the average person has more bandwidth at home then existed in the entire world in 1980, that the biggest slow down in web surfing has become the initial DNS or Domain Name Service look up. DNS is the service that translates the human readable Domain Name of 1nova.com [...]

Vista AntiVirus 2012, also known as Windows XP Home Security 2012 is one of the viruses/malware programs running around that masquerades as an anti-virus program.
Unfortunately it’s not. It uses various browser holes to install itself and then pretty much disables the computer until the user puts their credit card number in. Once the program is [...]

From the command line:
sudo mdutil -E /
sudo mdutil -i on /
The amount of time this will take depends on how many files are on your hard drive.

Sometimes OS X’s time and date gets out of sync with the real world, and using the option “Set date and time automatically:” doesn’t always work.
You can use this command in terminal to update it manually:
ntpdate -u
The server address can be any of the Apple Servers such as time.apple.com or the free [...]

Most users don’t need to use this command, but it’s very helpful for web developers and network admins to troubleshoot issues with web sites.
This command is run via terminal.
On Leopard (10.6) and Snow Leopard (10.7):
(as root or admin user) dscacheutil -flushcache
On all other version (10.0 – 10.4):
(as root or admin user) lookupd -flushcache