Reproducible with the same version of Inkscape (0.48.2) on Mac OS X 10.5.8 (i386) - see attached screenshot.
-> the only difference is the font provided by Apple:
Helvetica.dfont on Leopard:
Version 6.0d7e1
Location /System/Library/Fonts/Helvetica.dfont
Unique name Helvetica; 6.0d7e1; 2007-09-27
Proposing to close as 'Invalid' for Inkscape: the only difference is the version of the Helvetica font provided by Apple.
Reproducible with the same version of Inkscape (0.48.2) on Mac OS X 10.5.8 (i386) - see attached screenshot.
-> the only difference is the font provided by Apple:
Helvetica.dfont on Leopard: Library/ Fonts/Helvetica .dfont
Version 6.0d7e1
Location /System/
Unique name Helvetica; 6.0d7e1; 2007-09-27
Proposing to close as 'Invalid' for Inkscape: the only difference is the version of the Helvetica font provided by Apple.