Today Avast Free ask me to reboot the computer after ugrade the virus definition, is ok?
I run Windows 7, 32 bits
If Avast asked you to you probably should. I think your Avast upgraded from 5.0 to 5.1 and that’s why it’s asking you to reboot.
Hi hardov: If you recall what version you had and check what version you have now you will know if version was updated and if this is the case, like previously mentioned…this is normal. 
i dont remember the full version, i know it was 5, but i dont know the full version, right now is 5.1.864
That is the latest version, you’re good to go