Getting health check Critical error instead of Warning

Products

• Advanced Secure Gateway Software - ASG
• SG-300
• Symantec WebFilter (formerly Blue Coat WebFilter - BCWF)
• SG-600
• Intelligence Services
• SG-510
• SG-810
• SG-9000
• SG-900
• SG-S500
• SG-S400
• Secure Web Gateway Virtual Appliance
• SG-S200
• ProxySG Software - SGOS
• SWG VA-100

Issue/Introduction

Why is the Health check notification for just one DNS server failing is showing as "critical" instead of "warning" ?

Changing Default Notifications Severity from Warning to Critical may cause this phenomenon:   

Resolution

Changing this back to the default ( Warning ) should resolve the issue.