Netflix said Thursday that major technical problems over the past three days have severely limited the number of DVDs it could send out. The unspecified problems affected all of the Los Gatos, Calif.-based company’s 55 shipping centers and marked the biggest disruption in service since Netflix launched its DVD-by-mail subscription business nine years ago. Normal shipments from the online DVD rental leader were expected to resume on Friday, according to Netflix spokesperson Steve Swasey.