We have just released v188.8.131.521. This version has now been fully tested for v2.5 as well as v3.0.
There are no new features in this version except compatability for Joomla 3.0.
We still haven't fully tested with v1.5, 1.6, or 1.7, so the version for older version of Joomla has not yet been updated, but should be shortly.
Our internal testing catches 99% of problems that occur, but due to the many different configuration options in our software, and due to the nature of Joomla with everyones site having many different combinations of extensions, there are always things that crop up after our testing.
You should not have any problems with the new version, but if any problems do occur, you can easily revert to this a previous version(by installing it over the top of the new one) while we create a fix for any issues found. We have made v184.108.40.2060 available for download for Joomla 2.5 users just in case.