Checking mbox for new mail fails - new insights

[Helmut Jarausch <jarausch igpm rwth-aachen de>]

Hi,

as I reported earlier, the git-version (gtk3) of Balsa doesn't check my  
mbox file for new mail anymore - neither automatically nor if the  
'Check' button is pressed.

Now I've found out, that the following procedure does this checking  
though
it's tedious.

If I press the right mouse button on 'Inbox' and select 'Properties' a  
new window appears. If I change the 'Subscribe for new mail check'  
button (i.e. set to unset or unset to set), the 'Update' button becomes  
undimmed.
Now pressing this button does check for new mail in the Inbox and  
displays it.

Hopefully, this gives some pointers to where the problem might be.
I someone can tell where this checking is done I have a look at the  
sources myself.

Thanks,
Helmut.