Lately I’ve been having problems with my 411s. Keep in mind that this was a 411s that I flashed to 811s and then back again because I thought it would help the problems. When I try to burn at 4x in Nero (latest version) I get a Session Fixation error when it tries to write the lead-out. It burns the rest just fine, but it always gets an error at the end. Also, I can write them at 2x just fine. They are good discs (RicohG04). Here is a K-Probe scan of a dvd I wrote at 2x. Also, this is an NForce2 chipset that I just reformatted to WindowsXP (without NForce ide drivers).
Disc Type DVD-R
Book Type DVD-R
Manufacturer RiTEK Corporation
Media ID RITEKG04
Protection System None
Region 1,2,3,4,5,6,7,8
Capacity 4.37 GB
Free Size 0.00 GB
Free Blocks 0
Number of Layers 1
Linear Density 0.267 um/bit
Track Density 0.74 um/track
Maximum Read Speed 6.0x
Maximum Write Speed 4.0x
Current Write Speed 4.0x CLV
Write Speed Performance Descriptor 1 4.0x CLV
Write Speed Performance Descriptor 2 2.0x CLV
Bus Type ATAPI
VID LITE-ON
PID DVDRW LDW-411S
F/W Revision FS0J
Date Code 2004/01/13 11:32
FlashROM Manufacturer ID BF
FlashROM Device ID D8
FlashROM Type SST(SST39LF/VF080)(+3.3V)
Region 1
Vendor Resets Available 4
User Resets Available 4
RPC Scheme RPC II
Burst Rate 27.33 MB/S