Antonio,
If getting the latest printer drivers from HP don't solve the problem, try other HP printer drivers going backwards till you find one that works. HP5 and HP6 fundamentally do not work with VFP I tell my clients to use the LaserJet III drivers instead.
>I have a report that is running on NT network. The network has several printers (epson inkjet, cannon inkjet, Star matrix, HP660 and HP692).
>When this report is sent several times to HP printers the memory is not released and becomes full. The weird is that it happens only with HP printers.