why my widgets automatically be moved from one sidebar area to another?weird???

[matador18 0]

i am using pageline lite to build a testing site and i think it's really a very powerful and great theme....almost perfect~! however i found a problem recently. i placed several widgets into the content sidebar area and they displayed on the frontend of my site correctly.....but after some time....maybe hours or days...they disappeared...no widgets displayed anymore,the front end page became blank without content. i went to the widget page of the backend admin, and found the widgets no longer exist in the content sidebar area.....i checkout other sidebar areas, then found all those widgets were in primary sidebar or secondary sidebar etc.... this phenomenon happened again several time....i think it's a bug so i write it down here....hope author company could see and fix it....that will may pageline really perfect:)