Comment 4 for bug 877610

Please include the version of Ubuntu that you are running in your report. Under 11.10 64 bit I was unable to reproduce your exact problem; the prompt requesting elevated privileges from the software center was fully translated. A prompt requesting elevated privileges for changing proxy settings was not fully translated, however, as the title was in English "System policy prevents setting proxy settings". It's possible other prompts aren't fully translated as well, so this should certainly be looked into. Did you ensure that you set not only regional formats to dutch but also the system language to dutch? From your report that is unclear.