libppi-xs-perl 0.900-4ubuntu1 (lpia binary) in ubuntu gutsy

 PPI::XS provides XS-based acceleration of the core PPI packages. It
 selectively replaces a (small but growing) number of methods throughout
 PPI with identical but much faster C versions.
 .
 Once installed, it will be auto-detected and loaded in by PPI completely
 transparently.
 .
 If the two fall out of sync, the integration between the two is designed
 to degrade gracefully. PPI::XS is capable of determining which functions
 are no longer equal, and will simple leave the perl version alone,
 deleting the C version to free up the memory.