I asked this question already to the list, but I did'nt exactely understand the answer !! So, I'll ask my question again !! Is it normal that when your program uses 1/5 of the total amount of memory, the UV erase time is about 20 minutes ??? Also, is it normal that the UV-erase time depends on the amount of memory used by a program ?? And, if it IS normal, can someone give me a the full explanation ?? Glenn Goovaerts CIAO