Problem with Google Mail and Ubuntu

[Leonard Bussey]

I am running Ubuntu and have been using Google webmail for my email
client.  I also sometimes use Evolution to access the mail via IMAP.
Starting a couple of days ago, I cannot log onto Google webmail.  It
keeps on asking me for my username and password.  I can however still
access the email via Evolution using the same username and password.  

Does anyone know if the website is broken?  Also could I possibly have a
virus or spyware?  If it is a virus or spyware, are there linux versions
of an antivirus/antispyware programs?

Thank you for any help or advice you can give me

Len