After the likes of Mrs Fields Inc, Borland International Inc and, most notoriously, International Signal & Control Plc, London investors have become very wary of what are now seen as carpetbaggers from the US trying to float in the UK to avoid more stringent US regulation. So it is that accountancy software specialist Open Systems Plc, Minneapolis accountancy software company with no experience in the European market (CI No 3,057) has been seen off with a flea in its ear. The company had been hoping to float on the Alternative Investment Market but canceled the exercise at the last minute after receiving insufficient interest from investors in its quest for 2m to 3m pounds.