In additional to the last comment. I've just noticed the date modified flag of file2.txt gets updated everytime I run the backup. So FBackup knows the file has changed in the source, does something to the file that changes the date modified, but the actual contents of the file doe not get updated.
Everytime I run it generates the following in the log:
[23/04/2011 21:30:37] FBackup 4.6.250
[23/04/2011 21:30:37] Search for "Warning: " and "Error: " to locate warnings and errors in this log file
[23/04/2011 21:30:37] Starting backup for "Desktop" at 23/04/2011 21:30:37
[23/04/2011 21:30:37] Operating system: Windows Vista Home Edition Service Pack 2 (build 6002)
Processor[0] : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
Processor[1] : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
Processor[2] : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
Processor[3] : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
Physical memory (free/total) : 942 MB/3069 MB
Display (res/color/DPI) : 1920X1200/32 bit/96
System font (name/height/size/charset) : Segoe UI/-12/9/1
Admin/BkPriv/RePriv : True/False/False
IsWOW64 : False
Locale : English (United Kingdom)
[23/04/2011 21:30:37] Checking if the drives of the sources exist
[23/04/2011 21:30:38] Checking backup destination (External hard drive)
[23/04/2011 21:30:38] Creating the list of files to backup
[23/04/2011 21:30:38] Found file C:\Users\Graham\Desktop\file2.txt
[23/04/2011 21:30:39] Folders found to backup: 0
[23/04/2011 21:30:39] Files found to backup: 1 (0.03 KB)
[23/04/2011 21:30:39] Preparing shadow copy
[23/04/2011 21:30:39] Shadow copy created.
[23/04/2011 21:30:39] Added file C:\Users\Graham\Desktop\file2.txt
[23/04/2011 21:30:40] Saving backup catalog "C:\Users\Graham\AppData\Roaming\Softland\FBackup 4\fkcFiles\Desktop.fkc"
[23/04/2011 21:30:40] Remove excluded or deleted files from backup
[23/04/2011 21:30:42] Starting test on "Desktop" for backup number 14, the last backup number at 23/04/2011 21:30:42
[23/04/2011 21:30:42] F:\Backup\C\Users\Graham\Desktop\file2.txt OK
Test finished at 23/04/2011 21:30:43, 1 file(s) and 0 folder(s) tested, 0 error(s) and 0 warning(s) found
Total number of files added to backup: 1
Total number of folders added to backup: 0
Total size of files added to backup: 0.03 KB
Number of files excluded: 0
Number of folders excluded: 0
Next scheduled backup:
Backup completed at 23/04/2011 21:30:43 with 0 error(s), 0 warning(s)