I've recently made emerge --sync and now e.g. kde-plasmoids/quickaccess requires qt-4.3.3 (I have blocks in my emerge -avDu world). But I have 4.4.2 installed and the rest of the system used 4.4.2 until now ok (including plasmoids). In the log of emerge --sync I see: eclass/ eclass/elisp.eclass eclass/kde4-base.eclass eclass/mysql.eclass eclass/ELT-patches/ so this must have been caused by some change of kde4-base.eclass. My last sync was at least 2-3 days old, maybe more. At most one week. So it may be worth to look for changes during this period. This is major for me - I'm not able to emerge -Du world normally. Downgrading qt is nonsense. Reproducible: Always Steps to Reproduce: 1. Have kde-plasmoids/quickaccess installed together with qt-4.4.2 2. Run emerge -avDu world. 3. Observe blocks.
*** This bug has been marked as a duplicate of bug 248053 ***