firefox session bug

i tested my javascript code today and faced some curious bug in firebug’s console window like this.

[Exception... "Component is not available" nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)" location: "JS frame :: file:///C:/Program%20Files/Mozilla%20Firefox/components/nsSessionStore.js :: sss_saveState :: line 1749" data: no]
[Break on this error] oState.session = { state: ((this._loadState == STATE_RUNNING) ? STATE_RUNNIN…
nsSessionStore.js (line 1749)

what the heck is this? i reviewed my code and found no suspicious part. then i googled it and found the answer.
this is definitely firefox’s internal bug. and it will be fixed someday, somehow. but i don’t want to see the error message any more.

https://addons.mozilla.org/ja/firefox/addon/2324

you can fix this problem by installing this, very simple isn’t it?
(firefox officially announced that this bug is fixed in 2.0.12 but i use that version now..)

i installed firecookie and it was very cool, you have to try it!
so i got all stuffs i want and what only leaves to me is just focusing on my development!
thanx falks!