Had about 30 megabytes open, and did not check on Fennec size. Install failed, due to lack of space. But, now I show 249 of 261 megs used. I not sure why, if the installed failed, how any space was used. And, did not find any apps installed under Fenenc or Mozilla. Also, when I try to update other apps, the update process starts, but never completes. How can I find what did install and delete it, or regain my free space. Thanks for the help and suggestions.