Kmail: Folder Tree Flickering

[Stefan Heimers]

In Kmail, the folder tree on the left is flickering for some time after 
you select "Check Mail". It seems like the whole tree is redrawn each 
time one element is changed, even if that element is not visible at 
that time.

Is this a problem in the folder code in the libraries, or is Kmail using 
it in the wrong way?

Is there a way to tell qt not to update the display during the changes? 
Or would it be possible/faster to copy the tree, set the copy 
invisible, make the changes and then just swap the two trees?



My testsystem:

 - Pentium I 133MHz, 196MB RAM
 - Debian Sid
 - KDE 3.2.1 / Kmail 1.6.1 (binary debian packages)


Stefan