You can use the command (in privileged EXEC) clear ip dhcp binding X.X.X.X or just an * (asterisk) but if you use just the asterisk instead of an specific ip addresses, ALL bindings will be cleared, including active ones.
No, I haven't been able to upgrade yet, but I was wondering if there were any specific configuration commands to be applied to the dhcp settings after upgrading to make this work or if it was simply the change in firmware that fixed your problem.
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Configure Remote Network Monitoring (RMON) Events Control Settings on a Switch through the Command Line Interface (CLI)
Remote Network Monitoring (RMON) was developed by the Internet Engineering Task Force (IETF) to support...