Can someone add a virus or trojan to my flickr account?

I have tried to upload photos to Flickr twice today and both times my computer shut down the program and gave me a message about some protective service it was running. Last night, I banned someone from my Flickr group and their photos from the group. Later on last night Explorer did not want to work and kept asking me to change my IP protocols. I did not do it, but instead shut the computer down and restarted it later.