There's this one Windows PC, hiding in the darkest corner of the office, just running a network service all day. Suddenly the service is not available any longer... Opening explorer.exe to see what's up with the machine, while wiping a thick layer of dust from the screen: Zero bytes free memory on C:\ ...

Assuming that some log files have caused all the occupied space. NOPE! Instead, Windows update just installed a shitton of updates. They all failed, of course... After not being able to simply remove them, deciding to uninstall some programs and kill Windows update. Finally 800MB of free space!

Suddenly stumbling over a Visual Studio 2008 installation. Who the hell installed this on the PC? Absolute bullshit. Nevermind. Uninstall this shite.

The uninstaller takes ages to do anything, then aborts the uninstallation showing the popup "there is not enough space to uninstall". Looking into the memory indicator: 0 bytes left. DAAAAFUUUQ Microsoft??? WTFFFFFFF?!? 800MB to UNINSTALL Visual Studio? Are you for real???

Ended up force-deleting the directory: 3 Gigs free now...