0ORGUNIT_ATTR - Poor loading performance

We are experiencing extremely poor performance when attempting to load Org Unit attributes (0ORGUNIT_ATTR). Sometimes it can take Around 5 hrs for as little as 11,000 records. Would not put this down to hardware as we are seeing acceptable loading times in other areas.

Has anyone else experienced any poor loading times for this datasource? Would be useful to find a good benchmark for this.

any help appreciated.

thanks

Mike