I have a weird problem, when I am using the whitelist/blacklist on a specific zone on the Zone Based Firewall, I have a boot time of 8 minutes prior to be able to log on the router using the console port. If I remove the url-filter, the boot time drop at 2 minutes, it's a 6 minutes difference. We also have a similar problem if we want to add another site to the whitelist.
We are using a 881G and 891 using the ios 150-1.M3
Thanks for your help on the subject.