Binary package “lib64expat1” in ubuntu maverick

XML parsing C library - runtime library (64bit)

 This package contains the runtime, shared library of expat, the C
 library for parsing XML. Expat is a stream-oriented parser in
 which an application registers handlers for things the parser
 might find in the XML document (like start tags).
 .
 This package includes the 64 bit version of the shared library.