well I guess my >25 years of computer experience (as well as 15-20 yrs of unix/linux admin) is showing.
fixed it myself.
restarted machine, booted clean, looked at the settings menu and changed the following:
General tab:
turned of overburning
Write:
Graph Data:
unchecked all together.
(this alone might have done it!)
cheers to all! and to all, a good night...
(here;s to my new freenas box!)
the log from last run is here:
I 23:01:27 ImgBurn Version 2.4.4.0 started!
I 23:01:27 Microsoft Windows 2000 Professional (5.0, Build 2195 : Service Pack 4)
I 23:01:27 Total Physical Memory: 1,048,048 KB - Available: 735,460 KB
I 23:01:27 Initialising SPTI...
I 23:01:27 Searching for SCSI / ATAPI devices...
I 23:01:27 Found 1 CD-RW and 1 DVD-ROM!
I 23:05:45 Operation Started!
I 23:05:45 Source File: C:\temp\save-files-here\std-install-pgms-here\_Nix_downloads\FreeNAS-i386-LiveCD-0.7.1.4944.iso
I 23:05:45 Source File Sectors: 36,108 (MODE1/2048)
I 23:05:45 Source File Size: 73,949,184 bytes
I 23:05:45 Source File Volume Identifier: FreeNAS-i386-Liv
I 23:05:45 Source File Application Identifier: FreeNAS CD-ROM image
I 23:05:45 Source File Implementation Identifier: ††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††
I 23:05:45 Source File File System(s): ISO9660 (Bootable), Joliet
I 23:05:45 Destination Device: [1:1:0] SONY CD-RW CRX175E2 S002 (E:) (ATA)
I 23:05:45 Destination Media Type: CD-R (Disc ID: 97m26s66f)
I 23:05:45 Destination Media Sectors: 359,847
I 23:05:45 Write Mode: CD
I 23:05:45 Write Type: SAO
I 23:05:45 Write Speed: MAX
I 23:05:45 Lock Volume: Yes
I 23:05:45 Test Mode: No
I 23:05:45 OPC: No
I 23:05:45 BURN-Proof: Disabled
I 23:05:45 Filling Buffer... (40 MB)
I 23:05:47 Writing LeadIn...
I 23:06:12 Writing Session 1 of 1... (1 Track, LBA: 0 - 36107)
I 23:06:12 Writing Track 1 of 1... (MODE1/2048, LBA: 0 - 36107)
I 23:06:41 Synchronising Cache...
I 23:06:49 Operation Successfully Completed! - Duration: 00:01:04
I 23:06:49 Average Write Rate: 2,490 KB/s (16.6x) - Maximum Write Rate: 2,490 KB/s (16.6x)
I 23:06:49 Cycling Tray before Verify...
W 23:06:56 Waiting for device to become ready...
I 23:06:59 Device Ready!
I 23:07:00 Operation Started!
I 23:07:00 Source Device: [1:1:0] SONY CD-RW CRX175E2 S002 (E:) (ATA)
I 23:07:00 Source Media Type: CD-R (Disc ID: 97m26s66f)
I 23:07:00 Image File: C:\temp\save-files-here\std-install-pgms-here\_Nix_downloads\FreeNAS-i386-LiveCD-0.7.1.4944.iso
I 23:07:00 Image File Sectors: 36,108 (MODE1/2048)
I 23:07:00 Image File Size: 73,949,184 bytes
I 23:07:00 Image File Volume Identifier: FreeNAS-i386-Liv
I 23:07:00 Image File Application Identifier: FreeNAS CD-ROM image
I 23:07:00 Image File Implementation Identifier: ††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††
I 23:07:00 Image File File System(s): ISO9660 (Bootable), Joliet
I 23:07:00 Read Speed (Data/Audio): MAX / MAX
I 23:07:00 Verifying Session 1 of 1... (1 Track, LBA: 0 - 36107)
I 23:07:00 Verifying Track 1 of 1... (MODE1/2048, LBA: 0 - 36107)
I 23:07:54 Operation Successfully Completed! - Duration: 00:00:54
I 23:07:54 Average Verify Rate: 1,362 KB/s (9.1x) - Maximum Verify Rate: 1,485 KB/s (9.9x)
I 23:29:15 Close Request Acknowledged
I 23:29:15 Closing Down...
I 23:29:15 Shutting down SPTI...
I 23:29:15 ImgBurn closed!
I 19:31:06 ImgBurn Version 2.4.4.0 started!
turned of BURN-Proof