Tested on OS X 10.5.8, locale en_US.UTF-8:
Inkscape 0.47: 'Surface scale' is limited to 1000.00
Inkscape 0.48.0: 'Surface scale' is limited to 1000.00
Inkscape 0.48.1: 'Surface scale' is limited to 1000.00
Inkscape 0.48+devel r10032: 'Surface scale' is limited to 5.00
AFAICT this is a regression in current trunk only.
Note: I don't see the limit 100 in older versions either (it's 1000 on my system - filter primitive 'Specular Lighting > Surface Scale'). The 'Specular Lighting > Constant' setting on the other hand is limited to 100 in older versions, and 5.00 in current trunk.
Tested on OS X 10.5.8, locale en_US.UTF-8:
Inkscape 0.47: 'Surface scale' is limited to 1000.00
Inkscape 0.48.0: 'Surface scale' is limited to 1000.00
Inkscape 0.48.1: 'Surface scale' is limited to 1000.00
Inkscape 0.48+devel r10032: 'Surface scale' is limited to 5.00
AFAICT this is a regression in current trunk only.
Note: I don't see the limit 100 in older versions either (it's 1000 on my system - filter primitive 'Specular Lighting > Surface Scale'). The 'Specular Lighting > Constant' setting on the other hand is limited to 100 in older versions, and 5.00 in current trunk.