The test results you have selected are very old and may not represent the current state of Wine.
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Everything I tried seems fine - i.e. general appearance, fonts, sound...
What does not
What was not tested
Tried running a version installed under WinXP with a Spanish CD (to be specific, the CD-ROM copied to a local directory, which was mapped using wine as a CD). The sound works, the fonts are OK, did not test the microphone.