need help with strange java error

hi hoolio - thanks for your response

 

 

i'm not sure to be honest. personally, i don't think it's a big ip issue but obviously i've got to investigate just in case. this morning we ran the site on a single server in the pool and still received the same error so i'm pretty sure it's not a persistence issue. having said that, we use standard cookie persistence and i'm wondering if the problem occurs when the cookie session times out?