bleachbits does something to firefox that makes it not save or delete bookmarks after running bleachbits

first I would just like to say thanks for making something equilvolent to ccleaner in linux.and i hope you add the option for secure deletion in the future(guttman etc)

my problem seems to be around bleachbits.when i run it i find that the next time i come back to firefox the bookmarks are reset to a earlier time,unable to delete or make bookmarks,well i can make or delete them it is just that the next time i close firefox it will reset.I figured out how to fix it about:config and reset the browser.places to default.but the next time i run bleachbits it is back to the same problem.

I am pretty new to linux(well just came back after ten years away,SuSE 4.2 was last distro) and i'm running ubuntu 9.04
and will soon migrate to fedora 11 when it is released.

I don't know if there is anything i can do to help,but thanks.using latest bleachbit