Symantec spots trojans horses. How to fix?

I have Symantec program 10.2.0.276 running on Windows Vista. Recently it detected trojan horses on my photoshop program. It quarantined them, but i was unable to remove them.

 

Few weeks later, I have 2 more that appeared in C:/user/name/appdata/local/temp. They were partially cleaned, but i couldn't remove them either.

 

Yesterday, I got 4 more in the same file. Today I've got 8. I dunno where they're coming from...

 

Help?