I keep getting pretty regular server timeouts and disconnects, sometimes multiple times per day, sometimes the connection seems stable for days. At first I thought it would occur only on some servers (specific locations), but this does not seem to be the case. I've had these issues now in Ukraine, Romania, Sweden, Netherlands, ... (these are the locations I used most). Also using UDP or TCP does not seem to make a difference.
My VPN Client is Viscosity running on OS X 10.9.5. The log - which is identical with every disconnect - looks like this (disconnect on Zaurak):