I have just installed Photoshop C3, gosh, i was a bit regretted to upgrade my Photoshop as it is burdening my computer processor and computer memory a lot. My processor becomes sluggish, and my computer would hang too once i open the Photoshop C3. So what should i do now? Reformat my computer? I am not a tech savvy, really do not have idea how to get my computer back to normal.