I'd like to smack that guy who wrote the ebola virus.
Here I am setting up an Amiga 500 with a hard drive in the year 2013, and it starts acting funny (lots of GURU 80000003's - like when trying to start Hippoplayer).
I run VirusX (correction: VirusZ) on it and sure enough, it's riddled with infections of the Ebola virus all over many of the files. VirusZ removed them all, and now everything is running fine.
To think a frikkin' 20 year old virus is still causing headaches. They just never go away.
Seeing that made me think I should check my WinUAE "virtual" A4000 productivity setup, and sure enough, there were some instances of the Ebola virus there too (far less, but still some).
Dang!
Moral: check your Amigas for viruses and have VirusX in your Startup drawer if you can.