Bukkit

What steps will reproduce the problem?
1. Setup controller config
2. stop server, make baby spawn rate 5, reload
3. babies spawn nearly 100% of zombies
4. change rate to 1
5. nearly all zombies
6. change again to 0.2
7. all babies
8. change AGAIN to 0
9. STILL ALL BABIES.
10. Change AGAIN to 98
11. ALL BABIES.

What is the expected output? What do you see instead?
Actual CONTROL of the baby zombie spawn rate.
Instead; NO CONTROL WHATSOEVER. All babies!

What version of the product are you using?
Latest for 1.6.2

Do you have an error log of what happened?
No error log to report

Please provide any additional information below.
None that I can think of.
Was ok the first few times when it was at 1%, any adjustments, bigger or smaller, caused it to be at least 99% babies.