How can I get reports with my locale settings?

[James Wilde]

I'm running on a Mac, using the original Lion update (i.e. not the one with a .2 at the end of the file 
name).

I cannot get gnucash to produce reports with a space as thousands separator and a comma as 
decimal separator.  I have changed almost all the locale settings to sv_SE.UTF-8, but still reports 
come with a comma for thousands and a dot for decimals.

Under Preferences, I see that the Locale setting is still USD, although I have opted for and selected 
SEK, the Swedish Crown.

Any suggestions, please?

TIA

//James