Same database performs erraticly on a different computer

[driver7408]

I'm having an issue with my database; 2007. I designed it at work, and it runs seamlessly there on the work computers. However, when I bring it home and load it from a burned disc to my home PC, it is extremely problematic. The count function in one of my textboxes on a form returns no results, and my queries are not returning the proper results based on the expressions/criteria I have set.

Is there something simple that I am possibly overlooking?

 

[driver7408]

P.S. The count function on my form is working, but it takes about half a minute to finally display the results. I see the word 'calculating' down in the left corner. Seems to be much slower on this computer, although this computer is a much faster one. My database is not that complex, either.