Dell sells PCs pre-loaded with Ubuntu, but you have to dig deep into its website to find them.
The Register adds this observation:
Dell, it seems, is reluctant to big up its Linux offerings. At every opportunity it reminds potential customers that open source is NOT Microsoft. About Ubuntu it says: “The main thing to note is […]

From The Register…
A French man has won a lawsuit against computer maker Acer over a laptop he bought that came pre-loaded with Microsoft’s Windows XP and other applications he didn’t want.
Antoine Gutzwiller disputed the fact that he had no choice but to buy the €599 Acer notebook with the ubiquitous operating system and software products […]

According to the Daily Telegraph,
It took took five years and $6bn (£3bn) to develop, but Microsoft’s Vista operating system, which was launched early this year, has been shunned by consumers – with computer manufacturers taking the bizarre step of offering downgrades to the old XP version of Windows.
Microsoft founder Bill Gates speaking during the press […]