Paper and packaging firm Mondi is boosting the forestry and paper sector higher today after a kind word from RBS.The broker said - ahead of the group's first quarter statement due in two weeks - that it is expected to show "continued positive volume growth with price increases offsetting rising input cost pressures." RBS kept its 'buy' rating and upped the target price from 620p to 675p for the FTSE 250 group.Meanwhile, blue chip Vodafone is providing a drag on the mobile telecommunications sector.Shares dropped over 3% after Dutch peer Royal KPN NV issued a profit warning and said it will cut 5,000 jobs by 2015.---bcTop performing sectors so far todayForestry & Paper 6,376.64 +2.07%Software & Computer Services 720.54 +2.03%Industrial Metals & Mining 8,413.28 +1.64%Chemicals 7,180.23 +1.54%Mining 27,346.70 +1.28%Bottom performing sectors so far todayMobile Telecommunications 3,896.89 -3.30%Electricity 8,046.96 -1.39%Fixed Line Telecommunications 2,329.64 -1.12%Health Care Equipment & Services 3,730.99 -0.99%Gas, Water & Multiutilities 4,639.84 -0.98%