Comment 2 for bug 435990

I have this problem too. I was about to file a new bug report when I found this. I can upload config files or have ubuntu-bug do it if someone is interested.

After Firefox has been running for some time, typing gets very slow. Both in text forms and in the address bar, it can take up to 1/2 second for each character to appear. This is accompanied by Firefox being generally slow and using 15% CPU in the background. Typing in other programs is normal.

I like to open a lot of tabs. I suspend and resume the laptop often. Flash, Acroread and a whole bunch of extensions are installed. It's an Intel Atom CPU and Intel Mobile 945GME graphics. Ubuntu 9.10 Karmic Netbook Remix, upgraded from Jaunty. Not the same as #288953.