Duplicate Email Carries the same Verification Code

Duplicate Email Carries the same Verification Code

This is the followup of the bug I have posted here http://forums.zoho.com/forumHome.do?forumGroupId=2266000000002001&forumTopicId=2266000000004434&start=0&postdays=0&postorder=asc&highlight=&sid=02c99885e5bc182da0be74b84c5fde5b

Even in the second time when I click Add, another email is being dispatched to my email address right? In that the verification code is just the same. Shouldn't the verification codes be expiring over time for enhanced security?

Deepak