Chromium ERR_SSL_PROTOCOL_ERROR for all Google products

Starting yesterday I get an

ERR_SSL_PROTOCOL_ERROR

any time I try to access Google anything from Chromium: gmail, maps, blog dash, even Google forum where I wanted to look for an answer to the problem. I don't have this problem with Firefox or Chrome (for which I got an update this moing via update manager). I compared settings > advanced > HTTPS/SSL > manage certificates in both Chrome and Chromium and they appear to be identical. Now what?

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