DraftSight long start

Hello, we have SolidWorks 2012 with 7 network licenses, which used to be allowing us 21 DWG editor licences. Since changes in 2D editor and later DraftSight no license server is necessary (although DraftSight.V1.R2 has again option for network license server, but on different port than SolidWorks network server). Our problem is long start of DraftSight. Either on Win7 64b or Win XP 32b, both start approx. 30 sec. Installed as standalone, activated thru e-mail, connected to internet via proxy server. Any suggestions how to make DS start faster? Thank you.

Martin