Rated 4 out of 5 stars

I like it! But now, it doesn't work properly since the upgrade to Thunderbird 6 - paradoxically fine in Windows XP, but not in Vista and 7. Any ideas?

This review is for a previous version of the add-on (0.6.36). 

I use it with Thunderbird 6 on Windows 7. So, it will be happened by another reason. Anyway, here is not a place to report a bug. Please add your issue to the following system and show me the detail.
http://hogi.sakura.ne.jp/hiki/?IssueTrackingSystem