Hi. I was looking at my cache on my ISA server using the utility from the CD. From what I have read, MS recommends a formula for setting cache on ISA at 100 + (.5 X Users). For my company with 600 Internet users this would be 400mb. My problem is that we only have about 100 people on this ISA server so far and they are using 600mb of cache. Does anyone have any guidance/experience on this? tx. Greg.