Using the facebook plugin caused my entire site to be unusable on my brower that initated a request to use the login feature. It does not always do that. You can undo the damage by deleting that particular cookie or deleting cookies generated in the last hour (in case you don't feel like auditing your cookie history). I did minor research and came to the conclusion I could fix this problem by changing the field size on the apache server my provider is running. I wrote them a ticket and the key phrase I used was: Would you please increase LimitRequestFieldSize to something like 16380? I was told that since I am on a shared host, they would not do as I asked because it would affect server security. How true is it, that increasing the field size, affects security?