qt doesn't work properly due to broken scim-qtimm
Broken scim-qtimm package hurts qt's ability to enter anything into spinboxes. The temporary workaround is to remove scim-qtimm, but this removes kubuntu-desktop as well :(
testuser$ sudo apt-get remove scim-qtimm
Reading package lists... Done
Building dependency tree... Done
The following packages will be REMOVED:
Please consider either making scim-qtimm work properly, or removing it's kubuntu-desktop dependancy, or both.