Recently users have been complaining about not being able to access the internet. I checked our firewall, but nothing seemed to be out of the ordinary, and still no one could access the internet. Then I checked the cpu usage, and it fluctuated between 79 - 96%. I did a show xlate and found a LOT of translations taking place (numerous were from one or two pc's, which says virus, but AV hasnt found anything). However, when I did a clear xlate, internet connectivity seemed to be restored. The cpu usage is still pretty high, and I have to do a clear xlate every 15-20 minutes to keep connectivity up. I am not sure what's going on, but from what I have seen, it seems that the Pix might be reaching the limit of how many PATs it can do.
Any help is appreciated on this.