Tried Firebug 1.9b2. Seems more of a memory hog and crashes my Firefox more often. The previous one I think is better.
Actually, I didn't even do anything. I had 2 windows open, with about
30 tabs total. And I was just leaving it idle for a few hours and the
RAM usage (specifically the 'VM Size') just kept increasing until it
just couldn't take it anymore and crashed, showing the Crash Reporter.
The funny thing is that I wasn't even running Firebug. Prior to
upgrading Firebug to 1.9b2 the memory seems to be stable despite my
hours of being idle.
I have two profiles for Firefox. Both have Firebug, but the other one
is 1.8.3. I had both running at the same time. The one with the older
version of Firebug seems to have a more stable memory usage. I had
assumed the problem came from firebug.
Firebug 1.9b2 has been released.