SHARES in I-Fusion tumbled at the start of dealings on Friday after the information technology company warned that its profits for the year to end-February will fall short of market expectations. The first trade in I-Fusion slashed 10% or 10 cents off the company’s stock price to 85 cents, a new record low. I-Fusion said earlier that its results willd be weighed by a delay in starting work on contracts it had been awarded, and customers postponing technology purchases due to Y2K worries.