Win XP Pro SP3
MS Office 2007
Toshiba Tecra M5 1.56GBt RAM. 80GBt HDD free space, 2.0GHz
Centrino Dual Core CPU.

Each and every time I receive an .xls file from any source,
Excel takes at least 30-45 seconds to open it, regardless of
file size. I have turned off AV to test. AV has no bearing.
Once I saw a notice that Excel was operating in
compatibility mode. What do I have to do avoid this problem?