Rated 4 out of 5 stars

There is a bug in firefox 3.5
Sometimes, the configure would disappear when I start.

This review is for a previous version of the add-on (2009.60). 

Many thanks for your bug report.

We tested with the current versions:
- Firefox 3.5.4 Gecko/20091016 (default theme) with Windows XP Pro
- MM3-ProxySwitch 2009.60 (see version: your Firefox / Tools / Add-ons)

The reported problem doesn't occur.

Please inform about your configuration.