I played around a little bit with your theme's style in Firebug.. Here is the result.
It seems that your theme supports only a fixed set of widgets:
widget_pages widget_recent_comments, etc.... That's why styles are messy on this particular widget. You can try some other plugins (e.g. WP-Polls) - must admit that styles are not perfect on them as well.
Luckily - here's the fix:
- Update to the latest Development version - I made some improvements in widget layout, moments ago.
- Install Widget CSS Classes plugin. This will allow to fix appearance in your current theme for this plugin or any other plugin you might install the future. After installing, go to Widgets and in Widget Options for LSB Stream Status you will see an input for customizing Widget CSS class. Enter any of the widget styles available in your theme, e.g.
That's all. Let me know if it works for you, and I will release this fix in dev version via automated update.