I get redirected to the error page frequently when searching.
I think the redirect may be related to the search terms (hard to say). I'm searching for articles related to simulating the spread of both software and biological viruses / worms
same problem here, no matter what my search terms, about 80% of the time I get an error message telling me I don't have credentials, or I'm asked to "sign in" in order to change something, when all I've done is search.