10.4.9 – Quotas not in place when volumes mounted over SMB

Hi All, OS X 10.4.9, OD, Network homes ... When my students mount their homes using apple+K from any Mac, their quotas are working fine (defined in OD). When they mount their home folder from Windows machine, they have unlimited amount of space - the quotas defined in OD are ignored, allowing them to write TB of data ... Anybody else has experienced this behavior? Thanks, Stepan