Suzuki SV650S ignition/starting problem.?

Check the safety switch on your clutch lever. This feature is there to make sure the starter won't crank while the clutch is engaged (and subsequently roll your bike into something) You'll see where the wire plugs in near your lever. When the bike starts acting up again move the clutch lever a just a hair forward or backward while your running your starter motor. As SV's age in years this part takes a lot of abuse and will show the symptoms you described. I thought at first when my bike would sometimes start/sometimes not it had to be the starter relay too. After I bought the new one and swapped out the old one the problem was still there. I traced it back to the clutch safety switch.