Firefox losing sight of its roots
1. Every new version takes more space. Eventually it made it impossible to run my laptop and my PC, and forced me to upgrade the memory. It didn't notify me of this before the upgrade, giving me an unwanted and mysterious surprise.
2. Further, it made things such as google toolbars and skype not work WITHOUT TELLING ME BEFOREHAND. Thus it really annoys me.
3. Given the above problems, it is also annoying that there doesn't appear to be an easy way to return to the previous browser version without restoring my whole computer.
All of this completely reverses the role of Mozilla as the browser "good guys", and makes me NEVER want to upgrade my browser, or even use FIREFOX again....