Here is a table of loading times (in seconds) This test was carried out under Windows XP SP3 with the 300.000 lines sample I mentioned in a previous post, converted to the 4 formats. http://www.openoffice.org/nonav/issues/showattachment.cgi/66356/300000_line_sample.xlsx http://nabble.documentfoundation.org/file/n2006665/Loading_times.png (NOTES: * LO/OOo only loads CSV files after a screen asking for encoding/delimiters; ** I'm not surprised that MS doesn't support .gnumeric but I think LO/OOo should) Notice that LO/OOo takes 4 times longer to load an ODS file than Gnumeric and 24(!!!) times longer to load the xlsx file than Excel and Gnumeric. Interestingly, ODS is also the slowest format to load in Gnumeric. These results show that some optimization is needed for both LO/OOo and the ODS format... (Loading ODS in Office 2007 used the latest version of the OpenXML/ODF Translator Add-in for Office http://sourceforge.net/projects/odf-converter/. No comments on the loading time :) ) -- View this message in context: http://nabble.documentfoundation.org/Why-is-LO-OOo-so-slow-loading-a-spreadsheet-tp2006665p2006665.html Sent from the Discuss mailing list archive at Nabble.com. -- Unsubscribe instructions: E-mail to discuss+help@documentfoundation.org Archive: http://www.documentfoundation.org/lists/discuss/ *** All posts to this list are publicly archived for eternity ***