Computacenter, the IT infrastructure services provider, saw profits rise for the half-year despite revenues slipping 2.2% due to the challenging economic conditions.The group said it made profits of £12m, up 9%, due to cost reduction, growth in contractual services and exiting from businesses that used capital inefficiently. The profit was achieved despite the challenging economic backdrop, which resulted in sales falling to £1.22bn from £1.25bn previously. "'We are pleased with progress to date. Whilst much remains to be done, we are confident that we are on track for the year as a whole," said the group."Looking further ahead, our increased services mix, allied with our strong and strengthening balance sheet, gives us encouragement for growth in the future," it added.Interim dividend was raised 11.1% to 3.0p per share.