AN report issue in 2010 (1 Viewer)

Hi,

I have just upgraded an Access application from 2003 to 2010. In this applications I have reports that they run. The users are telling me that the reports are taken longer to run, in some cases up to three minutes longer. The thing is that I did nothing to these reports. I did to some forms, but they have nothing to do with these reports.

So 1) why would they run slower in 2010?
2) is there anything that can be done to seed them up to run as they did in the 2003 version?

Thank you

Frist, is the database split with each using having a copy of the front end on their local hard drive?

Second, did you convert the front end and back end mdb's to the new accdb format?