getfirebug.com has new Firebug 1.6.2 that fixes couple of problems (issue 3880 and issue 3933). We are being conservative and fixing only the most important & low risk problems since this release is planned to be the last one for the 1.6 branch.
Firebug 1.7 is close to beta phase and we want to focus our effort on it.
See, test results for Firebug 1.6.2
Firebug 1.6.2 is also uploaded on AMO, but it can yet take some time to appear.
Followup in the newsgroup please.