As crazy and esoteric it may seem, syncing your Apple AddressBook to Google really only works when your Mac is synchronized with an iPod or an iPhone. Just plugging such a device and syncing with iTunes triggers the sync to Google. You can also edit a file on your Mac instead to get the same result, as describe on Lifehacker.com:
Change the "Family ID." value to 10001 in ~/Library/Preferences/com.apple.iPod.plist

Thank you Gina Trappani and Josua Ferris!

When restoring OS X from a Time Machine backup (or by any other means) you may encounter problems with Adobe CS applications. When you want to start an Adobe CS app, this message can appear:

'Licensing for this product has stopped working'

This is what Adobe have to say about this know issue:
The Flexnet folders/files required to run Adobe applications can get corrupted, or have permission settings problems, if moved from one machine to another, or through a system restore from Time Machine. Flexnet service licensing failures can't be resolved by re-installating the appliaction, nor will the Adobe CS3 or CS4 Clean Scripts solve this problem. If permissions issues prevented the FLEXnet licensing service from launching, accessing its data, or communicating with Adobe processes, the licensing failure is expected.

The solutions may vary, but your best bet is to delete the following folder:

[hard drive]/Library/Preferences/FLEXnet Publisher/

For more information and further details refer to this document:
http://kb2.adobe.com/cps/512/cpsid_51260.html

Don't bother. Just open the VIDEO_TS folder from the DVD Player.app... Damn :)

mdworker (visible in Activity Monitor) is the Spotlight indexing process (active even though the process is not visible in the spotlight menu).

We had a situation where movie files from a mobile phone (file ending .3gp) caused problems, as the indexer didn't seem to get past them. Using up 99% and more percent CPU which caused the fan to go crazy. Removing the files resolved this CPU madness.

You may find which files could be the problem if in Activity Monitor you click on the mdworker process and the click "inspect" in the menu, then choose "Open Files and Ports".

Even in 10.5.6 Mail still won't place the signature above the quoted text in replies, even if said option is ticked in Mail preferences. The only solution I found so far works, but is sure isn't great:
greate a signature with nothing but hitting return once and check the "place above quoted.." and ake this the default signature.

Good to know (from Parallels knowledge base):

How to setup printing from Windows guest OS using Parallels Desktop 3.0 Parallel Port (Default Printer)

1. Stop your Windows VM if it's running.

2. Open VM Configuration Editor (Parallels Desktop menu - Edit - Virtual Machine)

3. Add Parallel Port Printer to the VM Configuration: click "Add" - select "Parallel Port", hit "Next" - select "Use a printer" - select the printer you have available in the Mac OS.

4. Make sure that you are able to print using that printer from the Mac OS side.

5. Start Windows and try printing some document using "HP Color LaserJet 8500 PS" (it's generic driver that's being used for printing from the Virtual Machine to any Mac OS compatible printer).

If you're booting into Bootcamp Windows on your Mac and can't get past the login Screen because your Keyboard won't do CTRL+ALT+DELETE, press the cmd (apple/command) key + u to call up the on-screen keyboard, where you can click the required keys with the mouse.

In Parallels, choose "Send Keys" from "Virtual Machine" Menu.

Make sure to install the latest Firmware update on your Unibody Macbook before restoring your Windows partition with Winclone. Otherwise there may be a problem installing the Boot Camp drivers.

We came across this problem today: Replies in Apple Mail app always show the same (wrong) sender date like "On 26.09.2007, at 14:08, Tom Jones wrote:" and its always 26.09.2007 in every reply to any sender, no matter on what date they had really sent their e-mail.

The solution to this is in System Preferences > International > Formats
Change the Region from "Custom" to your local Region e.g. "Switzerland"

If you need to test your RAM, Microsoft offer a free tool called windiag. The tool has its own loader, so it works autonomously for Intel or AMD processors, this means it works for Intel Macs or Linux Systems just as well as for Windows machines. You can download the ISO file here, burn a bootable CD and boot your computer from the CD. That's it.

Go here for the German windiag website.

And here's a reminder on how to burn an ISO disc image in Mac OS X:

1. Insert a blank disc.
2. Start Disk Utility.
3. From the File menu, choose Open Disk Image and select the ISO to be burned.
4. In the list of volumes, you will now see an item representing the ISO file. Select it.
5. Click the Burn button and follow the instructions.

This reminder is courtesy of vocaro on macosxhints.com. Thanks!