Tandem Computers Inc will raise further worries about the soggy state of the computer market with its warning yesterday that early indications for its second fiscal quarter to March 31 suggest that while turnover will be above the first quarter figure, it will be below plan, and despite the fact that expense control and asset management seem to be going better than expected, the lower level of business means that while profits will be up on the same period a year ago, they will be down on the $30.7m, 29 cents a share, reported for the fiscal first quarter; We believe our business in the quarter may have been affected by possible tightening of budgets by financial institutions in the United Kingdom due to higher interest rates and downsizing of securities market volumes in the US, the firm said.