Exif makernotes not shown?

[Jef Driesen <jefdriesen hotmail com>]

I own a Canon Powershot A620 digital camera and when viewing images in 
eof (and also in gthumb), no makernotes are shown. The section "Maker 
Note" is empty and section "Other" says "xxxx bytes unknown data" for 
the makernote. From what I have read about libexif, canon makernotes are 
supported (but not all exif tags can be decoded).

I have eog 2.14.2 and libexif 0.6.12 (from Ubuntu 6.06) if that matters.