Windows server is xtremely slow

Wadau wa IT; ninazo servers mbili moja ambayo ni Windows 2003 na nyingine nimeinstall Ubuntu linux; ubuntu ikiwa primary domain server; zilifanya kazi kwa muda wa miezi 6 bila shida lakini ghafala win server imeanza kuwa slow; nimeangalia perfomance sikuona shida lakini cha ajabu sasa imefikia muda it takes 1omin to log in!

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