[OT geekish] Firefox 1.5

If you're upgrading to FF 1.5 (Windows) take note

<quote>
In Firefox 1.0.x the option to allow web sites to install software is
found under "Tools -> Options -> Web Features -> Allow web sites to
install software". Starting in Firefox 1.5 the option has been removed
from the user interface (UI). The software installation option must be
enabled to allow installation of themes, extensions and certain
plugins that use the XPInstall method.

If you click a web site's "Install" link and you see a message bar
that says "Software installation is currently disabled. Click Edit
Options... to enable it and try again.",

* Firefox 1.0.x: Click the "Edit Options" button to open the Web
Features preferences panel, place a checkmark in front of "Allow web
sites to install software" and try again.
* Firefox 1.5: If you previously disabled this option and then
updated to Firefox 1.5, the disabled setting will be carried over.
Since the option to enable software installation no longer exists in
the UI, you will need to use about:config to reset the
"xpinstall.enabled" preference to the default "true" value (bug
310737).

(Some users may have disabled the software installation option based
on security issues which have since been resolved. To reassure,
software cannot be automatically installed without first being granted
permission via the "OK, Cancel" installation dialog, which has a
two-second delay before you can select "OK".)

Note: Updating of themes and extensions will hang indefinitely, with
no user feedback, if software installation is disabled bug 288054.

Downloaded theme or extension will not install

Some web sites offer the option to download a theme or extension
instead of installing it. Do not try to open the downloaded .jar or
..xpi file directly. After the download is complete, drag the
downloaded .xpi or .jar file icon from the desktop (or other location)
and drop it onto an open Firefox "Extensions" or "Themes" window.

Note: The .xpi or .jar installation will fail with no user feedback if
software installation is disabled (see above).

</quote>

Took me ages before I found this - just because I wanted coloured tabs
and the extension would not install.

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