Hi, i've got a problem

I use dvd2svcd (avi2svcd using besweet 1.4) to convert divx to svcd. But when i check "ntsc to pal" the sound is encoded slow.

Why...in the past i didn't had the problem...
after a reboot...with the same avi i can't convert it to pal without the sound slowing down?

anyone nows how to solve this?