possible a duplicate of #89696 seems to happen when multiple (huge) calc documents are open.
which Windows version do you run? 32 or 64 bit? could you upload test files and describe an eact and reproducible scenario to see that bug?
sorry i don't have a reliable way to reproduce this error, but the crash happens regulary on a windows 2003 terminal server with multiple users. the users which get this crash opens several large documents in parallel. sadly they haven't found a way to always reproduce it. is there a way to debug / get more information a crash? is there a libreoffice specific doc about how to debug this better?
sorry, forgot to answer this question. windows is 64 bit.
the crash seems still happen with 4.4.5.2. only the address changed to 0x7d6110e8. (+ sorry, still no reliable way to reproduce it)
sorry, i don't think i'll find a way to reproduce exact this/these crashes. if i find one, i'll create a new report.