md5 sums

I suggest adding md5 sums to all downloadable data - this ensures data integrity and authenticity.

Command md5sum filename creates checksum.
User runs same command after download to compare with checksum on website.

e.g.:
md5sum pymol-1_2r2-bin-linux-x64-centos45.tgz
2b8b7e826966938f277c4ea58e222e7c pymol-1_2r2-bin-linux-x64-centos45.tgz

Matthias

Thanks. I wonder if this is really necessary, though. Authenticity has not been challenged as yet, and integrity has not been a problem.