(Due to firefox version check)
- add new boolean key extensions.checkUpdateSecurity and set it to false in about:config page.
- Starting from Firefox 3.6 new preference is used. Check MozillaZine
page for details. Here are the steps for different versions:
- Firefox 3.6 & later: add new boolean key extensions.checkCompatibility.<firefox-version> and set it to false in about:config page. (For example, for firefox 3.6 the key should be extensions.checkCompatibility.3.6)
- Prior to firefox 3.6: add new boolean key extensions.checkCompatibility and set it to false in about:config page.