Peachtree 2008 maintenance

I have recently converted to Peachtree 2008 and find everything works well except for the maintenance tasks such as Maintain jobs, vendors or employees. It is taking 30 seconds to open a job just to change
the status to inactive then another 20 seconds to save. Our system exceeds all requirements and Peachtree support can offer no advice on the problem. It's been suggested to me by an IT person that their use of Microsft .NET Framework 2.0 may be at the root of the probelm. Has anyone encountered the same problem?
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