BUZZ-Smurfit Kappa: falls as questions raised over valuation

** Smurfit Kappa (LSE: SKG.L - news) falls as much as 7.6 pct as questions raised over stock's rerating YTD

** Most traded on Stoxx 600 by average 30-day volumes, recovers to trade down 3.7 pct but still among top fallers on the index

** Paper manufacturing co up as much as 40 pct YTD on hopes of a takeover

** Times latest to fuel speculation on Thursday, citing interest from Amcor or International Paper. Link: http://thetim.es/1FkD31t

** Traders say FT Lex article questioning company's valuation weighing on sentiment. Link: http://on.ft.com/1FHr9fo

** Co trades on 15.1x fwd earnings, double its 10-year average. Chart: http://link.reuters.com/duh54w

(RM (LSE: RM.L - news) : alasdair.pal.thomsonreuters.com@reuters.net)