Few studies exist on the outcome of patients with personality disorders (PDs) treated at ordinary outpatient clinics. This study examines the gains of such patients 2 years after treatment start at an outpatient clinic. Three patient groups were sampled: cluster A + B PDs, cluster C PDs and axis I disorders. Fifty-eight patients (53%) were amenable to follow-up, and they did not show less psychopathology than the non-compliers. All patients had structured interviews and filled in questionnaires. Patients in the PDs cluster A + B group showed considerable gains, while that was not found for the PDs cluster C and Axis I disorder groups. Since almost all patients received long-term psychotherapy sometimes combined with antidepressant drugs, the finding that such a treatment mainly shows gains in more severely disturbed PDs patients should be replicated in larger samples at ordinary psychiatric outpatient clinics.