Hi,

just for the record: there is no NetBSD version called 1.5.2ZA.

It could be 1.5.2, which is a successor of 1.5.1 and 1.5 along the
maintenance branch for the 1.5 release (cvs tag "netbsd-1-5").

The other option is that it's 1.5ZA.  The "1.5+letter(s)" is a tag
used to identify steps in the intermediate development versions,
otherwise referred to as NetBSD-current, from the time after the 1.5
release branch was created.  Thus, these intermediate development
versions are identified by 1.5A, 1.5B, ... 1.5Z, 1.5ZA, 1.5ZB, ... up
until the next point where a new major release branch is created.

Regards,

- H=E5vard