library incompatibility?

Dear Bill,

There is a binary version of the r.le programs for Linux on the moon,
but when one user tries to use it, the following message is received
and the r.le.patch program produces a segmentation fault:

  r.le.patch: using incompatible library '/lib/libm.so.4'
  Desire minor version >= 521 and found 404

  You'll need a libc with a version >= 4.5.21, the latest available
  version is 4.6.27.

Regards

  Andreas Holz