What are the temps in the tank at both cool and hot end? is it a male or a
female?
Also has anything changed in your husbandry or cage setup? new suppier for
food or different type or anything?
Is there only the one snake in the cage?
I also recomend checking oiut the cornsnake.com forums to find people who
can give you more advice - they will also want to know the above most of the
time though. ;-)
dr del