Haha, yes we do indeed read the forum, though a direct email never hurts either.
Two things come into play here. The first is you can't overwrite applications in the shared Applications directory if you're not an administrator. At least according to the permissions model, if you're running on your own machine and you're not the administrator, you're supposed to be running personal applications in the user applications folder.
When users run as a non-administrator, but try to do a file task that requires administrative access, the file system silently fails, rather than doing what it should do, which is prompt you to authenticate.
In order to work around Apple's bug, we'd have to implement a whole file system handler thing to seek administrative access and so forth for what is ultimately a pretty benign bug whose workaround is both easy and obvious. That is, download the newest version of the application from the website and drag it over in the finder, which does allow authenticated overrides for moving files.
So, it's basically gone on the list of feature requests where it competes with all the other feature requests, as described in other threads.