Xebec Corp is the latest company to be plunged into gloom by the ending of an OEM contract from IBM: the Los Gatos, California company which supplied disk controllers for the Personal Computer, says that IBM business had been accounting for 50% of its volume, that it had fallen to 20% in the most recent quarter, and that it didn’t expect to have any business in the future from IBM; as a result, it expects to report an unquantified loss for the first quarter on sales of $23m.