Issues with Firefox
From MozillaZine Knowledge Base
Before checking the following issues, you might want to check the official list of known issues for Firefox 1.0.
User interface
- Firefox won't start up
- Alt-Enter to open a link a new tab won't work for Windows ME/98(SE)
- Firefox asks for a nonexistent Master Password
Problems with specific websites
- "Document contains no data" error occurs for some web pages
- A website looks wrong in Firefox but works in a different browser
- Certain websites look like garbage
Miscellaneous
- PDFs/Adobe Reader crash or do not work properly
- Tooltips don't work
- Refreshing a POSTed form with file uploads crashes Firefox
Versions older than 1.0
- Oddities installing more than one extension at a time (Firefox 0.8 only)
- The installer ate my files
- Click on a link shortcut or Favorites in Windows displays an error or opens two windows/tabs.