liblzma0 4.999.8beta-0ubuntu1 (amd64 binary) in ubuntu karmic

 liblzma is a library implementing the Lempel-Ziv/Markov-chain
 compression method found in xz, lzma, and 7-Zip. This package
 includes the shared library.
 .
 This library does not support 7-Zip's LZMA-based .7z format (for
 that, see p7zip). This library's native file format is .xz, but the
 old .lzma format and raw (no headers) streams are also supported.
 .
 Compression is generally good (on par with or better than bzip2),
 decompression fast, and RAM usage high during compression and low
 during decompression.