As more and more spyware, malware, virus, trojans and the rest are created the updates are likely to keep growing in size.
You do have an option to move to a platform that for now does not use an antivirus like Linux or Apple. The Apple would mean another machine but Linux is free and not too hard today on folk.
It becomes a PITA when Spyware Dr. supplies a pgm. update that is roughly 80mb which under dial-up is not good. The painful d/l takes forever and maybe corrupted after all is said and done. What, I have found, if not already known is to reset the d/l preferences to "silent setting" which in turn allows an incremental d/l rather than an all or one time shot at it. This way for a prolonged period of time the update does get done and hopefully isn't corrupted. Maybe this answer has been already supplied, but getting info from the Spyware Dr. forum is yet another factor in posting here. The info just wasn't immediately or readily available as the forum, requires this and that, to me was another PITA. Alas, I hope this helps someone that maybe in the same dire need as I was. good luck -----Wily )