This year Jörg Knappen has completed a new release of the `Cork' (T1) encoded Computer Modern fonts: the dc fonts release 1.2.
This release of the dc fonts fixes many bugs (including the missing
?` (¿) and !` (¡) ligatures) and improves the fonts in
many other ways. It is strongly recommended that you upgrade as soon as
possible if currently you are using the old dc fonts, release 1.1 or
earlier. The new fonts are available from the CTAN archives, in
tex-archive/fonts/dc.
The names of the font files are different. This does not affect
LATEX documents but does affect the installation procedure as
it assumes that you have the new fonts, and will write suitable
`fd' files for those fonts. If you have not yet upgraded your dc fonts
then, after unpacking the distribution, you must
latex olddc.ins to produce `fd' files for the old dc fonts.
This must be done before the format is made. Running the test
document at ltxcheck.tex the end of the installation will
inform you if the wrong set of `fd' files has been installed.
Note that this change does not affect the standard `OT1' Computer Modern fonts that LATEX uses by default.