I don't know if Apple's byzantine App store policy would permit this, but would it be possible for you to add a link to your product description that points the user to a list of known issues in the current and earlier versions (and include one in the Release Notes on the iPhone)? I'm reading through a few threads and have realised that there are three or four issues that have been identified in 1.5.2 (and earlier) but unless you keep track of the posts, you never know if they have been confirmed as a bug or if there is a potential/known workaround for them. Therefore, having a running list of known issues for each version would help people (a) find out about them without having to monitor the forum each day (perhaps include links to the threads where they are discussed as well) and (b) help them learn when they have been fixed or are due to be fixed.
[Submitted as feedback by e-mail as well]
[Submitted as feedback by e-mail as well]