Excel 2007, Slow to Load and Save

Hey,

I am working on this excel file in which i am made around 5 sheets and have max 10 rows of data. Though i have formulas on most of the sheets....

My excel is suddenly became very slow and takes literally a minute to save and open. i was wondering if i have done something wrong or made it increase the iterations or have a circular reference error which is not showing up because i havnt done anything that great for it to be so slow....


Any views or info would be appreciated.
(i can upload the file if it is needed)