Erik, on windows you can use performance monitor to filter down diskrequest. With sysinternals tools you can also go down to disk accesses on process basis. google for sysinternals site:microsoft.com on other platforms I have no information. Harald -- GHUM Harald Massa persuadere et programmare Harald Armin Massa Reinsburgstraße 202b 70197 Stuttgart 0173/9409607 fx 01212-5-13695179 - Python: the only language with more web frameworks than keywords.