The software and computer services sector is higher despite heavy losses from document management group Invu which warned it now expects revenues for the second half of the year to be below expectations and announced a 'significant' reduction in employees.Sage, the accountancy software group, enjoyed a strong run last week as it upped its dividend and said conditions have stabilised in the second half and the shares are up again, helping lift the broader sector.Technology hardware and equipment is the worst performing sector. Among the fallers is chipmaker CSR, which has been downgraded to 'hold' from 'buy', with its target price reduced to 410p from 575p, by RBS. The broker thinks CSR's strong exposure to Bluetooth technology could impact future growth.Top performing sectors so far todayBeverages 8,127.87 +0.41%Software & Computer Services 571.13 +0.32%Media 3,229.68 +0.29%Tobacco 23,868.36 +0.25%Electricity 6,375.12 +0.16%Bottom performing sectors so far todayTechnology Hardware & Equipment 329.43 -2.11%Industrial Metals 4,916.56 -1.79%Banks 4,828.79 -1.62%Personal Goods 10,369.77 -1.52%Automobiles & Parts 2,588.24 -1.51%