Fixing .Net 2.0 Not Implemented Error in Linux Wine - e.g. Crossed out Boxes in the Menu in Photomatix

If you've used Microsoft .Net inside WINE, you may have come across this issue: Instead of e.g. a slider bar showing in the menu of an application, you see a box with a red cross inside it. The fix is very, very easy with winetricks, simply execute:
winetricks gdiplus


This works nicely, e.g. for HDRSoft Photomatix 4.1 in Wine 1.2.2.

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Common Issues with Linux Control Groups - e.g. Lack of Space, Device Busy/Mount Problems, Subgroup can't be deleted, no cpu shares file

Problem: The group will e.g. not let you echo PIDs into its "tasks" file and complain about a lack of space.
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Samsung Galaxy Kies Connection and Upgrade Fails with MTP Device Driver Popup

If you can't connect your phone to Kies because there is a constant Windows popup saying that the mtp device is installed again and again or not working correctly, here's a great workaround. It's extremely easy and works perfectly for upgrading to the newest Android version:

Simply Eject the Flash Card. Then connect the phone and it all works fine. Of course this way it can't access the SD card. And there will be a popup saying that the sd card is not inserted, just ignore it! ;)

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Fixing OpenSUSE's 'No Devices Matches MBR Identifier'

Check the file in the subfolder boot/grub/mbrid. Do sudo fdisk -l and check that the ID of your usb stick is the same as the one in the file. If not, change it. Just deleting the file won't work, then the code will assume you want to boot from CD or DVD and fail if it doesn't find one. But you can also try to boot with the kernel parameter nombridcheck. But unfortunately for me nothing worked. It seems OpenSUSE USB boot is pretty broken ...

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Clearing the Cache and Data of the Android Facebook App

The Facebook App likes to grow and grow in Android. The reason is that it never cleans cache and data. And you often can't even do it manually in Settings, Applications, Facebook, Clear Cache or Clear Data. But it turns out all you need to do it log out and back in and the cache is gone. Of course if you want a real fix, don't forget to file a bug report inside the app.

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Saving 2 W power by Making Sure Laptop_Mode oesn't destroy your HD

Laptop_mode is actually a great thing, as it activates a few powerful power saving modes in Linux, most importantly disk power saving and delayed writes. But if you use it with out of the box settings, there are two major bugs in Laptop Mode Tools, which could cause your disk to crash and are the reason it's normally disabled. Now let me show you how to work around them and easily save 2 W of power:
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