Apparently speed is a major concern for the development team of OpenOffice.org. They were not satisfied with the time it takes to load large spreadsheets from Excel into OpenOffice.org Calc. So they improved Calc to load large spreadsheets faster by a factor of 15+.
When they say large spreadsheet, they mean really large, 25 megabytes, 100 sheets, 1 million cells and hundred thousand formulas. A change in the algorithm used brought down the times from ~39 minutes to 2:37 on a 1.8 MHz Pentium IV. On a Dual Core AMD Opteron(tm) Processor 275 with more memory, the time reduced from ~28 minutes to 43 seconds, almost a gain of factor 40.
Unfortunately, the improvements will only be included in Release 2.1, targeted for end of the year. Hope for a nice Christmas present.
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