Alpha Microsystems Inc has spent a year or so restructuring its business and getting back onto an even keel after a flurry of buy-out and merger efforts, but it looks as if the Santa Ana, California company’s peace is about to be shattered once more. An investor group including Fundamental Associates, a Miami-based limited partnership, says it has acquired a 5.01% stake in the company, and has told teh US Securities & Exchange Commission that it is evaluating its position on whether to propose a leveraged buyout or other transactions with the company after study of its operations.