Created attachment 76130 [details] Broken plasma dialog background. After upgrading from KDE 4.9 to KDE 4.10 RC1 I encountered a bug in Plasma dialog backgrounds weren't being rendered (see attached screenshot). Note the expanded panel resize handles, where the background isn't painted I do not get this in my development environment, only when upgrading from 4.9 to 4.10 (and then rebooting). I have just upgraded my second machine and it encountered exactly the same issue. Both machines are using Kubuntu packages from the beta PPA. I suspected it was a broken cache, so I cleared /var/tmp/kdecache-david and this immediately fixed the issue. Before I did so I copied the entire directory, so I can try and provide any information that may be useful. Whilst it's fixed for me, given it happened to me on two independent machines it could well happen to a lot of people upgrading.
*** This bug has been marked as a duplicate of bug 314619 ***