Our network has been running a Microsoft Office Access 2007 application on Windows XP Professional for a long time without issues. We have replaced some workstations with Windows 7 Professional (32-bit).
The Access 2007 database application runs okay on the XP machines, but on the Windows 7 machines the macros do not run properly, they hang and freeze the program. The Access 2007 database files are in trusted locations.
For example a macro's Action is "RunCode", the Function Name is "RunPublicFunction()". When you run the macro it hangs and freezes Access. But, if you open up the Module the function is in, and run the code from within the module it runs correctly.