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version 3.5 update unoffical Rated 5 out of 5 stars
In the meantime
I made a workaround, so that it will work with FF3.5. You may use it until an official version is released. http://rapidshare.de/files/47771776/ColumnBookmarksFF3.5_workaround.xpi.html
Rated 5 out of 5 stars by Hans on July 6, 2009