Images Library Picker not updating anymore

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Hi

I have been running alfresco 5 community 6 months with no problems but all of a sudden the images library picker tool when editing a wiki page is not updating with any new images placed inside the sites repository..

Is there something I can run to update this library? What might I be looking for in the logs? I've noticed I am getting transaction cache full warnings..

Any Help would be appreciated.

Thank You

Version running is (d r99759-b2) schema 8022 v5.0.0

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I think im barking up the wrong tree.. I have a feeling there is a leak on my share server. As at the end of the day yesterday I was having problems previewing documents inside the repository. After a reboot of tomcat things seem back to normal… it could be a problem / leak with open office? that then causes knock on effects on the linux box and the jvm etc.. going to look at linux kernel tweaks and maybe try and log open office.