The Test Suite Batch Converter plugin saves a lot of time. This version is now compatible with Firefox 5 and Selenium IDE v1.1. It includes some refactoring to bring improvements from my latest plugins. You will get it automatically when AMO approves it. If you cannot wait, you can get it directly from the version page on AMO.
Time and time again people tell me how much they love this plugin. I am always happy to hear it. As a side note, I know when it is does not work with a new version of Selenium IDE or Firefox, there is no need to write a review just to say that it is broken. A comment on my blog will be better as I go through the comments way more often than I check the reviews. On the other side, feel free to write a real review with your experience on the Firefox add-ons site. In case you decide to give it a poor rating, please also mention what you would expect to be improved.
I am working on a new plugin that will complement this one really well. I hope to release it soon. Enjoy!