I was not able to confirm that issue.
Windows XP SP3, InCD 184.108.40.206 as DVD-RAM UDF driver
LG GH22LP20 FW: 2.00 @Promise PDC 20579 as writer
Optiarc AD-7200A FW 1.09 @USB (GL811E) as reader
Test data: contents of a Windows 7 install disc (531 files from few Bytes to 2,6 GBytes) in a folder on the HDD.
Test Media: Panasonic 3x DVD-RAM, formatted as UDF 1.50
Using MD5summer, I created a set of MD5 checksums for the source folder. Then this folder was copied to a Panasonic 3x DVD-RAM (that's where InCD does its job) using Windows Explorer. When finished, the disc was put into the Optiarc.
Read check 1: The MD5 sums were verified against the files on the DVD-RAM. No errors.
Read check 2: The folder on the DVD-RAM was copied to the HDD. Then again verification of the MD5 sums against the files in that folder. No errors.