If anyone is finding the current Linux (Mint) version of OpenOffice 2.4.1 very slow, I've just loaded the current beta 3 version from http://download.openoffice.org/3.0beta/ and surprisingly I find it runs faster. I have created a 52 page odt file that loads a lot of graphics. In the current stable the file actually crashes writer, but with the beta 3 version the file loads and is viewable with minimal slowdowns and I can actually edit the entire document. The file was originally produced in WinXP using OpenOffice 2.1, in case you were wondering how I actually made the file the first time without writer crashing all the time. For me, it is nice to use a newer version of software that does not appear more bloated and actually runs faster than the previous version, especially with Linux.
(My machine specs are a Pentium 4 3.0 GHz machine with 2.0Gb RAM, so perhaps that is why I notice the OpenOffice slowdowns. I've reverted back to Mint 4 Daryna for now due to possible speed issues that newer machines may not have.)