The problem is when you attempt to uninstall it, it refuses to politely oblige. Particularly, in Firefox it sets itself up as the default search engine when you type a search term directly in the awesome bar with no apparent way of switching back to Google.
Here's how to get things back to normal.
- Browse to about:config.
- Search for conduit.
- Right click then select reset from the context menu for each of the configuration entries found.
Your Firefox should be back to normal again.