The latest Flash Payer beta round is almost over. Macromedia has just released version 6.0.61.0 which is titled "release candidate build". This means that if you do not report any bugs that you found in this version NOW you will have to see it as a feature for quite a long time... I think that's a good reason to download it and check if it works with all your old sites/applications/experiments.

MM asks you to focus your attention especially on the following areas:
Shared objects
Text entry (particularly international text)
Local files and CD-based content
Movies using bitmaps
ActionScript intensive movies
Windowless Mode
Runtime Shared Libraries
ActionScript performance
Customization of HTTP headers