I’m suffering from the same problem. Just bought a new IHAS120 (7L0F) replacing my dead Sony DRU820A.
I tried to test my new drive by doing the following. Note that the following tests below were done in Windows XP Pro.
a. Copied approx. 4GB of data from a DVD to hard disk and took me 6-7 minutes to finish the task.
b. Tried to write approx. 4GB of data to a blank DVD (Verbatim DVD+R rated at 16x) with the software included (Nero 7 Express) and failed right off the bat (Shows “invalid disc” error). Tried the same task with another writing software (CDBurnerXP), used the very same disc and finished the task at 34 minutes (that’s way too slow). Also, the mouse was very choppy during the writing process.
c. Using the same CDBurnerXP software, I tried to burn an ISO image of Xubuntu 8.04 onto a CD-R (Sony CD-R @ 40x) and finished the task after 10-12 minutes (forgot the exact span). Mouse was very laggy at that time as well.
However, I tried doing the same with Xubuntu 8.04 and did the same tests (a, b, and c ,kindly refer to above). The estimated time to finish the tasks were…
a. also 6-7 minutes.
b. 8-9 minutes. (Same media, used Brasero as burning software)
c. 3-4 minutes. (Same media, used Brasero as burning software)
Mouse wasn’t laggy and the system’s very responsive during b and c.
I guess there’s something weird with XP. When my Sony was still alive, it shows copy and write performance (in WinXP) similar with that second set of tests I did in Xubuntu.
For the record:
Lite-On IHAS120 SATA DVD Writer (FW was 7L0E, updated to CK’s 7L0F but didn’t help solving this slow writing speed in XP)
Celeron D 336 2.8GHz
Seagate 80GB 7200 RPM IDE
Corsair Value Select 2x1GB 533MHz
*DMA’s enabled for both my optical and HDD as I look in the BIOS and POST
*The disks I used are Sony CD-R @40x and Verbatim DVD+R @16x
This is frustrating to say the least.