--ignore-times broken/redundant?

[Pádraig Brady]

Hi,

With an rsync-2.6.4-3 client talking
to an rsync-2.6.8-1.el4.rf server at least,
the --ignore-times option seems not to be honoured?

I.E. if I edit a file so that the mtime
and size are the same, the file with the new
data will not be transfered to the server.
In case it's important, the full command I run is:
rsync -viIaz --delete -e ssh . www.pixelbeat.org:'~/public_html'

Another thing I just noticed is the --checksum option.
Now I haven't tried this, but what does that do differently?
If they're equivalent shouldn't they be documented
together in the man page?

thanks,
Pádraig.