Non-identical files with identical md5sums on Debian systems?

[Fabian Greffrath <fabian@greffrath.com>]

Hi all,

I do occasionally check for identical files on different systems by
comparing their md5sums. So, just out of interest, could someone tell me
(how to find out) how many non-identical files with identical md5sums
there are there on a typical (say, amd64) Debian system?

Thanks!

- Fabian