[Plugin: Search Unleashed] Error when arrive from search engine

The Search Unleashed is working quiet well when you search ON LOCAL or arrive from search engine with search path (Ex: xxx.com/search/* or xxx.com/?s=*) but when you arrive from search engine with your direct path without search question (Ex. xxx.com/2010/09/10/post-slug) you get ‘No result’!!!!

My questions:

• Why does it use search unleashed because no search queation in the path?
• Why doesn’t find anything?

If I write the same URL into the browser (Ex. xxx.com/2010/09/10/post-slug) whithout search engine usage I can see the post.
If I disabled search unleashed and I tried to arrive from search engine like Google (Ex. xxx.com/2010/09/10/post-slug) I found the post also.
So It’s a bug! Please verify it! Thanks a lot tarat from Hungary.