Slow Perfomance in Excel 2007

Hi, all!

We have single BPC 7.0 SP05 instalation on SQL Server 2008. Server info - Intel Xenon 2,66, Ram 4 GB. We have EVSND Input schedule 20rows and 5 columns. Clients which have Excel 2003 can save any amount of filled cells in few seconds, and clients which have Excel 2007 saves one filled cells or all filled cells in same input schedule for 2 minutes.

Is this problem in Excel 2007 and all clients should have Excel 2003?

Best regards,

Iaroslav