Hello Jeremy,
I'm pretty sure it's normal; it was just discussed in January, with a
rectal cancer patient.
Nuisance eh?
There's some diet management tips here
http://patient.cancerconsultants.com/supportive_treatment.aspx?id=1002
along with lists of chemos that typically cause diarrhea.
Remember, most of us are not experts, do not have your case file, so it's
sometimes wise to double check with your own doctor.
I hope it improves.
J