ok, i didn't know about the previous discussions around this feature..

Such a button has been removed already twice from the code. We won't 
add it a third time. Instead we need support for refreshing the 
sidebar on demand, see the mailing list archive and/or this ticket 
system for discussions about this topic.

you're right.

but i think, a high frequent refresh-rate is often not necessary. in 
this case, an additional possibility to manually refresh the sidebar 
makes sense.

but the following code should be better than my first post:



<span style="float:left">

   <?php echo Horde::link('#', 'Refresh Sidebar', '', '', 'update(); 
return false;', 'Refresh Sidebar') . Horde::img('reload.png') . '</a>' 
?>

</span>



only multi-language-support is still missing...

You can set the refresh interval in your options to a lower value.

i think, it would be nice to have a refresh-button in the sidebar to 
manually reload the sidebar, when the content has changed (e.g. the 
mailbox-structure) but the refresh-interval is very long.

i added the following code to ~/templates/portal/sidebar.inc

(in line 5, after the toggle-menu-link)



<span style="float:left">

   <?php echo Horde::link('#', 'Refresh Sidebar', '', '', 
'location.reload(); return false;', 'Refresh Sidebar') . 
Horde::img('reload.png') . '</a>' ?>

</span>



perhaps, you want integrate this in the next release?