Does anybody feel openoffice on F12 is to slow?

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http://forums.fedoraforum.org – It's terrible when I use openoffice to view ppt files.Openoffice always takes a few seconds to reply after I press pagedown button.And it uses too much memory source.Opening a 3 mb ppt ,it will take 200 mb memory.Does this is a bug to openoffice? (HowTos)