What's a good shareware anti-virus program for OS 10.4.11?

Yahoo Mail is unlikely infecting your Mac. It is more likely someone has spoofed your e-mail address.

Furthermore, Yahoo has a history of turning on its marketing opt-in settings without warning the end user. It may just be another case of this happening.

My advice, quit Yahoo and inform friends of a different address.

ClamXAv is an antivirus you can get, but it is primarily so you don't become a Typhoid Mary. The virus is very unlikely affecting your Mac.

Mac OS X speed is more likely affected by either being near disk capacity, or some other issue. Are you running some optimization software? If you are, quit doing so, as they are actually more like a virus to your computer's stability than not running them. They should only be used for troubleshooting, not for "regular" maintenance. Mac OS X does its own maintenance, pretty well.

See my FAQ*:

http://www.macmaps.com/Macosxspeed.html

- * Links to my pages may give me compensation.

ok i am confused... i thought that since the TI's use a "powerbook" processor and the OS X is biased (now please do not flame me..) UNIX os then it was (for the most part) impervious to virus and whatnot. so why would the earlier mac's need a anti-virus program. now i can understand for the intel macs which use the same basic structure as win machines, so can someone please explain this to me? Now also i have read that somewhere that Jobs had said something about antivirus software but then later retracted his statement. Now i work in a chain office supply store and we are starting to get mac antivirus software which makes me wonder "why when mac are suppose to be impervious to viruses" i would love it if someone would explain this to me. please be kind do to my ignorance i am part of the micro$oft brainwash and i am trying to under stand other os's

the ever questioning neophyte
-rastlin

There is no such thing as a "Powerbook" processor.

Sounds like you are reading a lot of misinformation, or not copying it down correctly from the correct sources.

This is what is true:

1. Titanium Powerbooks use a PowerPC processor.

2. New Macs use Intel processors, with any Mac that was released as a new release in 2006.

3. The Intel processor allows native Windows installation, but does not necessitate Windows installation to run.

4. Mac OS X while not impervious to viruses makes it difficult for applications that are written in its operating system language to propagate within Mac OS X by the virtue of the fact that root account is disabled by default. Furthermore, portscans are not able to see Mac OS X as most ports are on stealth mode or non-existent by default. It still does not preclude Mac systems from becoming a Typhoid Mary as someone writing a document in Mac OS X received from a Windows installed machine, might forward it on to another Windows installed machine without scanning for viruses, and the virus might lurk in the background until it hits another Windows machine. Windows executible source code is compiled in a completely different binary format than Mac OS X, thus any Windows executible source code needs a virtualization engine installed on a Mac to run Windows applications through WINE and/or operating systems. See the options for running Windows on a Mac*:

http://www.macmaps.com/macosxnative.html#WINTEL

Another interesting facet is that most non-Apple machines use a different firmware structure than Apple machines that have Intel processors. Apple machines use an EFI firmware that is unique. So hacking at the firmware level that might attack a Dell or HP machine won't affect a Mac.

- * Links to my pages may give me compensation.

Message was edited by: a brody