Browser crashing

Ever since I installed the AVG premium yesterday my browsers keep crashing and asking to login to sites that I am on constantly. What is going on???

Hello Cheryl,
We regret the inconvenience caused. We'll certainly check and help you.
Could you please confirm in which browser you are facing this issue? and how long?
Also may I know how did you suspect that this is caused by AVG? so that we can check and help you accordingly.
Awaiting your response.

Hello Cheryl,
We regret the inconvenience caused. We'll certainly check and help you.
Could you please confirm in which browser you are facing this issue? and how long?
Also may I know how did you suspect that this is caused by AVG? so that we can check and help you accordingly.
Awaiting your response.