The Device Buffer is fine, or it stays at 100% most of the time, its the other buffer am talking about, maybe its the imgburn buffer? Its the one above Device Buffer, it only says buffer, that's the one that slowly goes towards 0%. Though i had another burn, and it went down to 30% and then it gradually started to go up to about 50/55% before the burn was over. Anyway, if this is bad or not, i've had no problem with the cds/dvds i've burned, they seem to be working fine. I also tried a burn with the buffer size at 512, and then it stayed at around 98% the whole time.