Please be aware of this bug with Java 7 U55.
Administrators for Cisco UCS Manager or users of the Cisco UCS KVM application may encounter an error while opening KVM or Cisco UCSM. A pop-up window with the following dialog may be encountered :
'Application Blocked by Security Settings'
'Your security settings have blocked an application signed with an expired or not-yet-valid
certificate from running'
Cisco UCS Manager or KVM users/admins who are using latest JRE update (1.7 update 55) are likely to see this issue.
Users that have not updated their Java version to 1.7 update 55 should consider delaying the update until a fix in the Cisco UCS Manager becomes available.
If the upgrade was already done, then lowering the Java security settings is another option.