After upgrading to 2.4.25, I get ERR_SPDY_PROTOCOL_ERROR on several subdomains and even for Aliases within one domain.
Cheers, K. C. -- regards Helmut K. C. Tessarek lookup http://pool.sks-keyservers.net for KeyID 0xC11F128D /* Thou shalt not follow the NULL pointer for chaos and madness await thee at its end. */