Unexpected behaviour with xlswrite.m?

Well it unexpected to me anyway.

A is a matrix of doubles, size 11*61. I wish to write the matrix to an xls file.

i type:

xlswrite(myFilePath, A);

the data is writen to xls, BUT is split up over into several small matrices of size 11*11, with 15 blank rows between them.

running win 7, matlab 2011a, office 2007.

how do i just write the matrix in the format A? Ie not split up into smaller matrices??

thanks