I don't have Oneiric installed. However I did try:
pdf2ps firefox.pdf
ps2pdf firefox.ps output.pdf
and while it looks correct the text has been converted to bitmaps and as a result is not selectable.
I also tried printing to PostScript from firefox and running ps2pdf. The result appears to be as good as the native PDF from firefox. Images worked and all text is selectable.
So it should be possible to fix this by improving pdftops to use patterns instead of Type 3 fonts and use the correct glyph names so that gs can correctly encode the fonts.
I don't have Oneiric installed. However I did try:
pdf2ps firefox.pdf
ps2pdf firefox.ps output.pdf
and while it looks correct the text has been converted to bitmaps and as a result is not selectable.
I also tried printing to PostScript from firefox and running ps2pdf. The result appears to be as good as the native PDF from firefox. Images worked and all text is selectable.
So it should be possible to fix this by improving pdftops to use patterns instead of Type 3 fonts and use the correct glyph names so that gs can correctly encode the fonts.