getfirebug.com has Firebug 1.10a4
Firebug 1.10a4 fixes 16 issues.
Firebug extension developers might be also interested in new API introduced in this version. It’s now possible to create and customize toolbars in Firebug without using XUL. This API should be useful especially in cases where you want to avoid XUL, e.g. when developing a bootstrapped extension. An example extension is available.
Please post feedback in the newsgroup, thanks.
Jan ‘Honza’ Odvarko