"Addresses several issues related to overall reliability, usability and compatibility."

this update rendered me no longer able to connect to my G4 in other room that's on 10.5.8. prior to installing it lion had no troublec onnecting to my macbook on 10.6.8 and G4 on 10.5.8. with 3.5.1 i can still connect to macbook pro but G4 connection fails 100% of the time. So i don't think they addressed much with compatiblity heh

Seems to resolve some of the dropouts we see when scanning a VLAN.

The only thing keeping me from buyg ARD is that you only get 1 admin with each license. We have 4 people who would need access to monitor machines so Apple tells me we would need four unlimited licenses if we want four admins. Really messed up.

A year later, and here I am echoing the below comment;
Maybe you should fix the issues and bugs before charging more than the OS itself.

Ever heard of open beta?

My "all computers list" has 1000+ clients in it, and if I click on that list, I am going to have to wait at LEAST 10 minutes while it updates all the status. Hey, maybe I don't want to update the status, ever think of that? Give me a stop button maybe?

Copying files is still horrible, though at least it usually works on the 8 or 10th try.

ARDAgent always crashes. My "get info" window doesn't work. Still many crazy keyboard bugs (sometimes it won't type or it holds down the option key without your knowledge).

Many times, a client says "offline" but if you click observe, hey, there it is!

Way to many bugs to be a final version (oh wait, how long ago was this released?). I hate to say it, but this app is as buggy as the Finder, if not worse.

Maybe you should fix the issues and bugs before charging more then the OS itself.

Ever heard of open beta?

If you can't get this thing to install (e.g. it says that it can't find an existing version to upgrade, but you do actually have one installed), just use Pacifist (available here at MacUpdate) to extract all the bits and pieces and put them in the right places. Hints: To install to /usr/bin and /usr/share (the unixy bits), use Terminal to go to /usr/bin and do "open .", and do the same in /share, to open those usually hidden folders in the Finder, so you can drag-drop from Pacifist into them. Be sure not to overwrite entire folders; i.e. do not drag-drop /usr/share, but open /usr/share/man/man1 and drag-drop the appropriate FILE into that folder; same goes for the stuff intended for /Library and /System, etc. Put the files EXACTLY where Pacifist says they should go (e.g. the app must be in /Applications not /Applications/Utilities or ~/Applications). The only downside is that Pacifist runs a prebinding update after every single drag-drop operation (even for, say, documentation files, which have no prebinding). So it takes quite a while. Lastly, because I trust Apple's installer to get the permissions right more than I trust Pacificist, after doing all of this, I re-run the .pkg installer, which now has an "Upgrade" option, that actually works (it just reinstalls everything I just manually installed, but does it the Apple-preferred way.) PS: Pacifist is a little buggy - sometimes it can take two drag-drop operations to actually get it to do anything. You'll see it working when it happens correctly. Hope this helps folks.