Check these items to make sure they're not running.

1. Click on "options" in the tools tab.
2. Click on "connections" & make sure the box for "Connect at
startup" is unclicked.
3. Click on "shutdown" & choose "shut down immediately".
4. Click on "Advanced" then "system startup" & make sure the
box for "Run on System Startup" is unclicked.

I hope this resolves your issues.