Lagging issues

Hello. Out of the blue, my Macbook Pro has been lagging. All I did was use Google Chrome for just typical sites like Facebook and email. The day before was the same and play Minecraft. I looked around for some of the issues and in the console I see these messages:
8/21/11 9:27:25 PM com.apple.launchctl.Aqua[107] launchctl: Please convert the following to launchd: /etc/mach_init_per_user.d/com.adobe.SwitchBoard.monitor.plist
8/21/11 9:27:25 PM com.apple.launchd.peruser.501[105] (com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self
8/21/11 9:27:26 PM com.apple.launchd[1] (0x1004008f0.anonymous.vmnet-netifup[116]) Failed to add kevent for PID 116. Will unload at MIG return
8/21/11 9:27:29 PM com.apple.launchd.peruser.501[105] (com.apple.Kerberos.renew.plist[153]) Exited with exit code: 1
8/21/11 9:27:31 PM com.apple.launchd.peruser.501[105] (0x1006000c0.mach_init.switchboard.sh) Failed to check-in!
8/21/11 9:28:23 PM com.apple.WindowServer[71] Sun Aug 21 21:28:23 Grant-Staceys-MacBook-Pro.local WindowServer[71] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.

Can someone help me figure out what they mean and how to fix it? Thanks.

 

My whole computer lags. Even if I don't open anything, it will lag changing the wallpaper, or lag opening Applications from the dock. I decided to take it to the Genius Bar today, but hopefully I can fix it myself before I go.