Improvements:
* Crop the destination url that is shown in redirect notifications if it is very long.
* When manually whitelisting items, pressing enter while an input field is focussed now adds the items to the whitelist rather than closing the preferences window.

Bug fixes:
* Status bar icon and menu was incorrect when moving through history.
* After refreshing pages that attempt to redirect, "allow" option in notification box would sometimes fail.
* Meta refresh urls that are enclosed in quotes (e.g. ') redirected as if the quotes were part of the url.
* Following links to allowed destinations caused the link destination to be shown in the menu of other tabs still open to the same original url.
* A non-existent setter was being called in the request log (this broke the request log in Fx 3.1b3).

0.5.3: Bugs fixed:
* Fixed problem opening preferences window through Tools > Add-ons (bug was introduced in version 0.5.1)

0.5.2: Bugs fixed:
* Fixed conflict with RefControl addon where back/forward button sometimes does not work.

Improvements:
* Added Ukrainian (uk-UA) locale (thanks to Володимир Савчук / Volodymyr Savchuk)
* Updated German (de-DE) locale
* Updated Spanish [Mexico] (es-MX) locale
* Updated French (fr-FR) locale
* Refactored code

Improvements:
* Added preference for setting domain strictness (registered domain, full domain, or protocol + domain + port)

Improvements:
* Added Spanish [Mexico] (es-MX) locale (thanks to pedro arana matus)

Improvements:
* Added disabling of dns prefetching (only applies where dns prefetching applies, such as in Firefox 3.1+)
* Updated initial setup whitelist domains
* Updated French (fr-FR) locale
* Updated Korean (ko-KR) locale

Improvements:
* Added Korean (ko-KR) locale (thanks to Sumin Byeon).

Improvements:
* Added support for Songbird 1.0