Video freeze up using WinAVi Converter

Hi, got video freeze-up when playing back dvd made using WinAVi Version 8.0 to convert Divx format to regular dvd. Tried using different blank dvd disc like Verbatim, Maxell,Fuji.( if it was a disc issue). No luck. Does it matter if other programs is running in the background while WinAvi is doing its job? Should I go back to previous versions. :confused: