Is this normal?

Hey guys, never found the need to ask a question here but I've gotten tons of answers. Thanks for allowing me to search through all of your knowledge. I do have a question now though. 2006 F430 this is the passenger side axle boot. It's expanded seems like it's under pressure and it's leaking grease out the edge. This doesn't seem normal but why would it blow up with pressure? Should I be concerned? TIA XS
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sealant passed effective date, clamp is loose b/c of age
if grease lost is too much, stuff more and replace clamp

 

It is normal, over time the heat from the exhaust causes the boot to swell. It will crack open in the near future. I replace the boots on these cars frequently.