Yep, it’s been going on for months. For a while I thought it was the fault of the “go to topic listing” link in the lower left, but it will also sometimes kick me out if I return to the Helix sub-forum via other paths and sometimes when I refresh. Once signed out, i can usually sign back in by clicking the “sign in” link; however, it often takes more than one click. I’ve done it up to nine times in a row before it responds. Thus defying the classic definition of insanity!