Today I found the real culprit of the situation, the kernel module skge was active instead of sky2. I do not know why the wrong module has been loaded, but loading the right module corrected the error, no more hangs. SSHFS works perfectly again.
SSH and SSHFS do not have a problem, please close the case. Please accept my apology for the false alert. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]