Description of problem:

kde-plasma-lancelot-1.0.3-1.fc10.i386 requires libplasma.so.2

Additional info:

==
looking for (u'libplasma.so.2', None, (None, None, None)) as a requirement of kde-plasma-lancelot.i386 0-1.0.3-1.fc10 - u
(...)
looking for (u'kdebase-workspace-libs', u'EQ', (u'0', u'4.2.1', u'7.fc10')) as a requirement of kdebase-workspace.i386 0-4.2.1-7.fc10 - u
(...)
kde-plasma-lancelot-1.0.3-1.fc10.i386 requires: libplasma.so.2
Searching pkgSack for dep: libplasma.so.2
Potential match for libplasma.so.2 from kdebase-workspace-libs-4.1.2-14.fc10.i386
Matched kdebase-workspace-libs-4.1.2-14.fc10.i386 to require for libplasma.so.2
Potential resolving package kdebase-workspace-libs-4.1.2-14.fc10.i386 has newer instance in ts.
==

Seems kde-plasma-lancelot needs to be rebuilt, it's dependencies updated or the package obsoleted - sorry, I didn't digg any further then this.