Micosoft Office XP Excel 2003

When I open Excel 2003 the splash screen hangs for 30 seconds to about a
minute and then excel opens and behaves normally.
All other office programs such as Word etc open quickly and behave normally.
If Excel is opened in safe mode , the program opens rapidly without any
splash screen at all.

Any explanations and indeed a cure for this behaviour ?

Regards

Flynne

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FLYNNE