2003 : switching from MS IE to Firefox
2004 : switching from MS WMP to VideoLAN
2005 : switching from MS Office to OpenOffice
2006 : switching from Dreamweaver/TopStyle to EasyEclipse for HMTL/CSS/PHP devel.
2007 : will switch from AdobeCS to GIMP/Inkscape/Scribus & Co
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until 04/2006 : Using MS Windows 3.11 - XP on all machines. although linux aware for years, little to zero knowledge of unix/linux.
04/2006 : Migration of home server to UbuntuServer from WindowsXP because of instabilities.
10/2006 : Migrating my main Desktop/Workstation (Toshiba Portege M200 TabletPC) to Ubuntu (no more Windows now since 12/2006)
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04/06-10/06 : spending endless hours of reaccustoming myself to commandline (bash), unix commands and filesystem hierarchy standart. And hacking around the config files. And helping to enhance some wiki articles.

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main shortcomings of Ubuntu :
where the hell is the metapackage "ubuntu-desktop-base" without all the apps???
would be "ubuntu-desktop" without (list is NOT complete as i am currently looking into this):
- OpenOffice
- Evolution
- Gaim
- Ekiga
- Games
- Rhythmbox/GStreamer
- Totem/GStreamer