HELP PLEASE : General & Trouble Shooting

Hi basically i bought a premium account nad when i go to start a new thread/read or even go to the download pages it always asks me to sign in over and over again but i never get any further then that.Im using Firefox can sum1 point me in the right direction as im not acheiveing full use of this premium account.Thankyou in advance.

is it by clicking links or you cant go from the base forum to the next forum to the topic (example from base to general to off topic)?

For example its like this ill b in soma disscusion then on the left there is say macro downloads and then ill click it and boom logs me out and when i relog to go to the download bit again boom does it again :// Its on other parts aswell unfortanatly.

ahhh that. clear your cookies, temp internet files, basicly everything. if that doesnt work a reinstall of windows does <_< i used to thave that problem for a long time but i killed my comp and a reformat fixed it