Playlist will not fit on one audio CD :/

Question

I recently installed the latest version of iTunes on a new PC and tried burning for the first time. I was trying to burn a playlist that has been burned before on another computer but kept getting the "playlist won't fit" message.
After systematically removing one song at a time and retrying it finally let me burn once the length was under 45 minutes :/
I tried with several different CDs, all of which I've used before without incident. I've tried changing burn preferences and speeds without success. I can only burn if I'm under 45 min'.
Clearly there is a problem... any help would be very welcome.
The diagnostic doesn't appear to offer any insight either
Microsoft Windows XP Professional Service Pack 2 (Build 2600)
System manufacturer System Product Name
iTunes 7.1.1.5
CD Driver 2.0.6.1
CD Driver DLL 2.0.6.2
LowerFilters: PxHelp20 (2.0.0.0),
UpperFilters: GEARAspiWDM (2.0.6.1), incdrm (4.3.20.1), InCDPass (4.3.20.1),
Current user is an administrator.
Video Display Information:
Radeon X1950 Pro
Radeon X1950 Pro Secondary
Connected Device Information:
DiskDrive, ST3320620AS, Bus Type ATA, Bus Address [1,0]
DiskDrive, WDC WD360ADFD-00NLR1, Bus Type ATA, Bus Address [0,0]
CDROM, LITE-ON DVDRW LH-20A1H, Bus Type ATA, Bus Address [0,0]
If you have multiple drives on the same IDE or SCSI bus, these drives may interfere with each other.
Some computers need an update to the ATA or IDE bus driver, or Intel chipset. If iTunes has problems recognizing CDs or hanging or crashing while importing or burning CDs, check the support site for the manufacturer of your computer or motherboard.
E: LITE-ON DVDRW LH-20A1H, Rev LL06
Media in drive is blank.
Get drive speed succeeded.
The drive CDR speeds are: 16 24 32 40 48.
The drive CDRW speeds are: 16.
The drive DVDR speeds are: 16.
The drive DVDRW speeds are: 16.
  Windows XP Pro  

Answer 1

Thanks in advance for your help.
Microsoft Windows XP Professional Service Pack 2 (Build 2600)
Dell Computer Corporation Latitude D800
iTunes 6.0.1.3
CD Driver 2.0.4.3
CD Driver DLL 2.0.3.2
LowerFilters: Cdr4_xp (5.3.4.21), MxlW2k (1.0.1.104),
UpperFilters: pwd_2k (5.3.4.59), Cdralw2k (5.3.4.21), GEARAspiWDM (2.0.4.3),
Video Driver: NVIDIA GeForce FX Go5200 \GeForce FX Go5200
IDE\DiskFUJITSUMHT2040AH_______________________006C___, Bus Type ATA, Bus Address [0,0]
IDE\CdRomSONYDVD+RW_DW-R56A_____________________QDS1___, Bus Type ATA, Bus Address [0,0]
If you have multiple drives on the same IDE or SCSI bus, these drives may interfere with each other.
Some computers need an update to the ATA or IDE bus driver, or Intel chipset. If iTunes has problems recognizing CDs or hanging or crashing while importing or burning CDs, check the support site for the manufacturer of your computer or motherboard.
Current user is administrator.
D: SONY DVD+RW DW-R56A, Rev QDS1
Media in drive is blank.
Get drive speed succeeded.
The drive CDR speeds are: 4.
The drive CDRW speeds are: 4.
The drive DVDR speeds are: 4.
The drive DVDRW speeds are: 4.