.tmp files...

I have a project which uses data environment and data reports. Every time I close the project and VB, I see that some .tmp files exist on app.path.
Why? Is something that I do wrong? Or is this a bug of Vb? But I saw this only when I use data environment and data reports. In other projects I do not have a problem... Keep in mind that evreytime I work with the project, the number of tmp files icreases continuesly...

Michael Vlastos
Automation Engineer
Company SouthGate Hellas SA
Development Department
Athens, Greece