postscript printing -- missing fonts?

[beijingjj]

If I browse to a wikipedia web page with Seamonkey and do a print preview it looks great, but if I actually print -- either to my postscript printer (color laserjet 2550) using CUPS, or simply print to a postscript file (with cupsd stopped) the output is different. There is no differentiation between bold and normal text, it all looks bold and quite different from the print preview.

I also added my laserjet as a PCL printer and printed the article to that with the same results -- all bold looking characters.

Does anyone have any suggestions on what could be going on here?

Thanks.