1. I don’t understand ‘How can I stop something arriving every time on my toolbar I log on’
2. Unless the default has been changed, ‘Safely Remove’ a USB device is only necessary for devices that are using ‘delayed write’ and they are internal hard disks and optical drives. With devices like memory keys, go to Start > Run type diskmgmt.msc and press Enter. In the left column of the Graphical View where it states the Disk number, right-click the device > Properties > Policies Tab. Here there are two buttons to choose between; "Optimize for quick removal" and "Optimize for performance". Choose quick removal and you can remove the USB drive without clicking the "Safely Remove Hardware" icon. Try to always use the same port and don’t be too hasty in unplugging a device that has just been written to.
3. In the AVG Test Center > Scheduler, click on a task > Edit and disable it. There are usually two tasks; update and scan. Once disabled you can decide when to run it/them.