I recently puchased CloneDVD2. Works great on my PCs as long as I use DVD+R media. Running on my HP Pavilion with an HP 640b DVD-RW with DVD-R media will result in getting to 100% burn, but then the PC is hung (status = "flushing buffers, writing borders") and has to be hard reset to resume. Interestingly, the DVDs written seem to work/play with no problems. I just never see the Eject pop-up and have to power down the PC to get it running again. Again, it works fine with DVD+R media (Verbatim). I also have another HP Pavilion with HP640c and HP940 writers. Both of these will work with either DVD+R or DVD-R media. This leads me to believe that something in the 640b is not returning status to CloneDVD2 to initiate the Eject pop-up. Has anyone else seen this problem or have any information about this? Thanks.