server problem: redirection error – infinite loop – Error 310 (net::ERR_TOO_MANY_REDIRECTS): There were too many redirects by Zakadu

Hello, I run a forum based on vBulletin 4 and moved with the website to a new server. Since then from time to time I keep getting redirection errors on my website: Firefox is saying: redirection… (Budget: $100-$200 USD, Jobs: Apache, Linux, PHP, System Admin, vBulletin)