On Mageia "sta1" updated to the date, Konqueror (Web) has resource consumption permanently well above expectation, on *some* websites when it's (supposedly) iddling.
E.g. on "MLO"
Same when in a thread, see: http://pic.al/BHd
Neither Qupzilla nor Xombrero (qt5 webkit and webkitgtk engines) have this issue, see: http://pic.al/FHd
It's fine on some other websites e.g. mageia.org forum, see: http://pic.al/DHd
Testing Box is an emulated old Celeron "Core2Duo" (Conroe) with 2 gig RAM.
While I'm testing browsers' implementation, seems there's a mistake for Xombrero's 'tld-rules': in Mageia-sta1 they're looked upon in /usr/local/share/xombrero but they're standing in /usr/share/xombrero.
EDIT: some of English mistakes.