Apparently this is neither a JoomSEF nor a Joomfish problem. The problem appears to be in the mod_mainmenu.

A solution is proposed at www.joomfish.net/forum/viewtopic.php?f=38&t=1568#p7430

This solution seems to work just fine. Haven't tested it thoroughly yet, but first impression is good.

I have exactly the same problem at my site. I checked my SEF URLs and there is no URL with just "/". The lowest levels are "/en" and "/nl".

Should be ok right? But nevertheless, the Home link still switches to "/" with always the same language.

I didn't understand the proposed solution of changing the language variable. How can I do that? When you mean changing the Content Language under Parameters (Advanced) in the Article editor: I have already done that (and in Joomfish also).

Not sure what to try next. Any suggestions?

Thanks very much. This is the only thing still bugging me. Everything else seems to work just fine!

Funny. I was struggling with the same problem today. Hope a solution is found quickly.