Strange mouse bug - problem

Hi all, I've a question to do here because google didn't help me lol.
I've a Logitech Corded Mouse M500 and of course the Logitech SetPoint program.
Since 2month I've have a problem probably due to that software, even if I've had this program for a long time and it never given me problems.
Briefly, my mouse settings, speed and precision in particular, are not saved after a reboot. I tried to reinstall SetPoint but it didn't help. These settings change in Control Panel->Mouse. And when I set up my settings there, I also have to change the acceleration in SetPoint because it also changes over there.
What should I do? It's really annoying going to mouse options every day and doing the same clicks...
Tell me if I've to write any other info.

Thanks.

whs said:

That could be due to a change of the Desktop themes/background. I noticed that every time I change the theme, my mouse settings go back to default. Try working with a simple desktop - e.g. one of your pictures.

Unfortunatly that is not the cause, actually I'm here with the default theme and with my wallpaper.

By the way I need SetPoint so I cannot simply unistall it...I'll try again unistalling and clearing register or something else, but sincerely I can't understand what can cause the problem.

Thank you Hopalong but I've already have the updated version.
Now I've unistalled SetPoint and the mouse settings doesn't change after a reboot (without setpoint). I've also removed setpoint from registry. Now I'll try to install it and see what happens.

Unistalling and installing it again doesn't resolve the problem..My settings are: Enhance pointer precision ON (in control panel) and no acceleration in setpoint.When I reboot the pc, the option "Enhance pointer precision" in Mouse Properties is disabled but in Setpoint all is as it must be. When I turn it on, and click Apply, in SetPoint it changes my Acceleration settings setting it from "no" to "low". So I have to go in setpoint and click "no", then Apply. Finally I have the same settings that I have had before rebotting.

No solutions...