[tor-relays] A lot of Warn messages when bootstrapping Tor 0.3.2.9 (stable)

[Dark Matter]

Hello,
 
I'm running a tor-relay with Tor version 0.3.2.9 (stable). I had to do some daemon restarts, because of connection limit issues. Since the last two restarts the Tor process issues a lot of warnings while bootstrapping, because it could not create a (client) circuit. Relay functionality is working without problems. Before these restarts I had no problems connecting to the tor network and creating circuits. Tor usually booted within less than a minute without warnings.
I found a ticket describing the same problem (although for a different Tor version) here: https://trac.torproject.org/projects/tor/ticket/24639. Are there any known workarounds yet?
 
For more detail, I'll post the last warning messages:
 
Jan 25 18:31:54.000 [warn] Problem bootstrapping. Stuck at 90%: Establishing a Tor circuit. (Connection timed out; TIMEOUT; count 1503; recommendation warn; host B7047FBDE9C53C39011CA84E5CB2A8E3543066D0 at 199.249.223.60:443)
Jan 25 18:31:54.000 [warn] 1503 connections have failed:
Jan 25 18:31:54.000 [warn]  1026 connections died in state connect()ing with SSL state (No SSL object)
Jan 25 18:31:54.000 [warn]  392 connections died in state handshaking (TLS) with SSL state SSLv2/v3 read server hello A in HANDSHAKE
Jan 25 18:31:54.000 [warn]  84 connections died in state handshaking (Tor, v3 handshake) with SSL state SSL negotiation finished successfully in OPEN
Jan 25 18:31:54.000 [warn]  1 connections died in state handshaking (TLS) with SSL state unknown state in HANDSHAKE
 
Tor had to try to open a circuit for more than half an hour before finally succeeding...
 
Regards, Dark