Great guide on how-to upgrade Debian.
HowTo upgrade from Debian Lenny to Squeeze | MDLog:/sysadmin.
Some time ago I found this great blog-post about how to prioritize the Ethernet connection over Wi-Fi. In my case this is when I’m at home.
Sometimes, your Mac will connect to a janky Wi-Fi network. The connection is slow or you’re on the other side of a lead wall and you’re getting a really poor signal. When you finally find an Ethernet jack to plug into, you may notice you’re still connected to the Wi-Fi network that was giving you problems. This is because your Network Service Order list is out of its proper order to allow the Ethernet to take over when plugged in. Don’t fret, we’ll show you how to reset the Service Order list on your Mac to ensure that Ethernet takes priority over AirPort.
A couple of months ago I found this litte app that checks all the disks on my Mac for any errors.
SMARTReporter is a free application for Mac OS X that can warn you of some hard disk drive failures before they actually happen! It does so by periodically polling the S.M.A.R.T. status of your hard disk drive. S.M.A.R.T. (Self-Monitoring Analysis and Reporting Technology) is a technology built into most modern hard disk drives that acts as an “early warning system” for pending hard disk drive problems. SMARTReporter can notify you of impending hard disk drive failures by sending e-mails, displaying a warning dialog or executing an application. The current status of your hard disk drives is always displayed through the customizable menu item.
Because SMARTReporter relies on the S.M.A.R.T. implementation of Mac OS X, it only supports ATA, SATA or eSATA hard disk drives, if you want S.M.A.R.T. support for your SCSI or FireWire hard disk drive, send feedback to Apple.
Please note that a S.M.A.R.T. alert doesn’t mean that your HDD will completely fail for sure, nor can S.M.A.R.T. catch all possible HDD errors – it’s just a very valuable indicator. Follow this link for more information about S.M.A.R.T. technology.
Great post!

About What’s Keeping Me?
Have you ever have the problem where you can’t empty the Trash or eject a disk because something is preventing you? Usually the reason is because some application has a file open, and thus you can’t get rid of the disk or trash the file. That’s why we made What’s Keeping Me! What’s Keeping Me will identify the application that is holding the item open. You can then use What’s Keeping Me to quit the problem application (or kill it if needed) so you can perform your task. What’s Keeping Me includes an Automator workflow so you can perform searches directly from the Finder too!