I am a Dutch user and prefer the my local date & time format, system wide. I have no trouble speaking or understanding English and find it very useful to have the rest of my system configured in English to make my life easier when I need to Google a term, for example.
Is it possible to apply the a local date/time/currency/etc. format to the system, while maintaining English menu & dialog captions?
Abolutely,
go to System → Administration → Language Support
at Language, select English as your default language:
And in the Text tab, choose Dutch as your preffered Locale for numbers, dates and currency.
I've been using this setting for a long time, and it's a bit weird sometimes, you may see something like "This file was modified on Maandag...", but it works very well with most apps.
After a bit of troubleshooting, it turns out you also have to:
Click 'Apply System-Wide'
Reboot
For some reason it seems to work now.
What I did:
I'd swear I did this before, but logic is against me.
For Ubuntu 11.10