The first URL doesn't contain option or Itemid variables at all, which is strange. I think that this can only be caused when JoomSEF thinks that option is a non-SEF variable, which happens when google bot tries to access strange URLs on your website.
Try setting the "Handle query variables as non-SEF" to "No" in JoomSEF's Configuration on the Advanced tab. Also enable the "URL Source Tracing" on the same tab, so we can trace the origin of such URLs if they're created next time.
You'll probably need to remove such wrong URLs manually.
It's also strange that home page is displayed for the second URL which looks OK. Maybe this is caused by the Itemid value. Try checking which menu item has the ID of 207.
