*nix & Windows integration software I'd like to use

Vintela have some pretty cool software for integrating Solaris & Linux systems into an AD environment.

Perhaps because it has to compete against Samba and other freeware solutions, their products aren't ridiculously expensive either. Quite a refreshing experience. Its a shame that the normal mode of operation for most software houses is to seek to soak their customers. No names! No packdrill! But we all know who I mean.

Perhaps the coolest feature is the ability to apply GPOs to *nix clients. Add in the inexpensive nature of the software, and it seems pretty compelling.

What's the downside?

For my company, its the fact that our AD Servers aren't running Windows 2003 R2, which is a requirement of the solution.