Comment 17 for bug 166371

ScislaC: I can confirm the replacement in Firefox. Now that I have real entries, I've tested it completely and read up more on libxml2 mailing list. It looks like the parsing of SYSTEM/PUBLIC entity data caused them to drop the NOENT replacement option, giving us no option to disable SYSTEM/PUBLIC parsing or introducing custom entities before the parser croaks.

Thus, I'm convinced that a patch to libxml2 is the only solution without hacking inkscape to read in the xml first and search and replace entities from a set list for illustrator files. Which I would hate to have to do.