Computer froze...Now just grey screen after reboot

Hi all,
After installing leopard on my machine (1.5 yr old Macbook), it has worked fine for me since dec. Today at work, my mail froze, but unlike usual, I couldnt even force quit. So i held down the power button to reboot.
It rebooted the first time with a ´´do not enter´´ symbol.
After that, it reboots BLANK GREY SCREEN.
eeK! Help, please! I am out of the US right now in a land of very few mac repair centers. Suggestions...

I was going to suggest you maybe experiencing the same slow boot up as me.
The screen appears first blank grey for almost 2 minutes then after a protracted blue screen for another 4 minutes I finally get to the log-in.
But it appears you may have received other technical advice.

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Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
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b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
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If you use a wireless keyboard, trackpad, or mouse, replace or recharge the batteries. The battery level shown in the Bluetooth menu item may not be accurate.
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Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
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Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
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Step 9
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
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This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
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If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

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Computer froze...Now just grey screen after reboot

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