It would be really great if the comments bar (or any of the toolbars in Acrobat X for that matter) could be placed anywhere by the user or at least if the user was given the option to dock to top, bottom, left, or right. I work for an educational publisher and work mostly on lengthy textbooks which tend to also have lengthy comments. Having these docked on the right side of my screen with no option to move them really makes for difficult viewing of pages and verification of corrections. In all previous versions of Acrobat I have used in my time here (9 years) comments have always been located at the bottom and it has made reviews go so much quicker.
I almost regret upgrading because I am on some tight deadlines right now and fear that this change is going to slow me down big time.
On a more general note, I feel that this newest version is not as user friendly as past versions. I've spent the last hour or more fiddling around trying to find all of the tools I am so used to having access to. I'm still not sure I've managed to find everything and it seems some things I've relied on are no longer available. Is there a document that indicates what features, tools, etc. were taken away?