I have the same issue with Iceweasel 3.0.1 on Debian. Did you ever get the problem solved?
My output:
(firefox-bin:4677): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Arial 14.625', text='English Hello'
(firefox-bin:4677): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Arial 18.701171875', text=' '
(firefox-bin:4677): Pango-WARNING **: failed to create cairo scaled font, expect ugly output. the offending font is 'Verdana Italic 12.466796875'
I have the same issue with Iceweasel 3.0.1 on Debian. Did you ever get the problem solved?
My output:
(firefox-bin:4677): Pango-WARNING **: shaping failure, expect ugly output. shape-engine= 'BasicEngineFc' , font='Arial 14.625', text='English Hello'
(firefox-bin:4677): Pango-WARNING **: shaping failure, expect ugly output. shape-engine= 'BasicEngineFc' , font='Arial 18.701171875', text=' '
(firefox-bin:4677): Pango-WARNING **: failed to create cairo scaled font, expect ugly output. the offending font is 'Verdana Italic 12.466796875'