Help required to solve start up issue

[pvtjoker89]

Hi there, I currently use a Macbok pro, purchased mid 2011 with Lion. Within the past few hours I have come across an extremely irritating error. It started with the opening of an app, 'Pig Rush', I went to quit the game to find I was unable to, I couldn't cmd + tab out either, I could only hear that 'bing' sound, implying I was unable to. Now upon start up of my mac, once logged in, the afore mentioned app starts automatically about 30 - 45 seconds after I log in, I'm then unable to do anything to close it other than rebooting my MBPro with the power button. Is there a way to reboot without opening any of the programmes previously opened? As I feel this could be a way to solve the issue.

Thanks in advance, Joe

[pvtjoker89]

I have managed to solve the problem myself, after a few reboots it appears OSX recognised the issue and allowed me to start without restoring the open apps, thanks anyway