Speeding up software population in the Self Service Portal

Speeding up software population in the Self Service Portal

I've published a few applications that are available from the Desktop Central notification area Self-Service portal. 
Is there a way to speed up the population of the software titles. 
On a freshly installed DC agent, the software list populates immediately. 
On a PC with an existing agent, it seems to be about 24 hours before the software populates in the list. 
Is there a way to speed up this so that users are able access the software immediately or within an hour of publishing the title?

Thanks 
Patrick Korman

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