Digital Workshop

What can make a page in opus turn slow... very slow...
When i click on a button with a lot of actions it takes sometimes 10 seconds befor it opens the edit dialog.
When i make a new page all new actions are going fast like always.

My question is, what can make a page slowing down?
it that the number of actions on a page, is that a kind of action on a page?

Kind gegards,

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Right now i am working on a Fujitsu Siemens Laptop computer 2.5GB
internal memory: 2 GB, Harddisk: 250 GB (70% free)