Hi krackedpress, This is accounting. I try to explain in details: Three lines and for each three columns of numeric datas and two of text . Two colums are the sums of the expenses for each account => for one of them I have 24 lines and three colums: one for text, one for the expenses and one for the dates. For the two others I have three columns : one of text and two of expenses. For one of this both account I have 25 lines and for the last one 8 lines. I have two celles more with a sum in each. Nothing more complicated except different colors. 18 cells with sums. My LO version is 4.0.1.2 (in french). Number of operations : 100. Memory for LO : 20 Mo Memory per item : 5,2 Mo. My file : 24,6 ko (28 on the disk). Thanks. Jacques -- View this message in context: http://nabble.documentfoundation.org/How-I-can-reduce-the-loading-speed-of-Calc-tp4047785p4047995.html Sent from the Users mailing list archive at Nabble.com. -- For unsubscribe instructions e-mail to: users+help@global.libreoffice.org Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted