unable to type in cell

[paulwl]

i am in an excel spreadsheet and all working fine, but for some reason i can
suddenly not select any cells or do anything... there is no protection on any
of the cells, and if i open a brand new page it does the same there - any
ideas?

 

[Daniel.C]

What if you open a new workbook ?

 

[paulwl]

it does the same... if i close everything down and start up again it all
works fine, but then eventually the problem comes back...

thanks