Antivirus

[HostFat]

As I said on IRC, I think that you should add something about it on FAQ ( mainly Windows FAQ )
I had to make an excitation of %AppData%\Roaming\Bitcoin / bitcoin.exe on Microsoft Security Essential to make it working correctly ( bitcoin )
I don't know if it only a MSE problem, but it can be easily a problem with all antivirus.

So I think that it will a good idea to add something about antivirus on official FAQ

EDIT for Linux:

<+PovAddict> ...and if you use Linux (and you trust not to get a power outage in the middle of a database write), I suggest libeatmydata to disable fsync on bitcoin, should speed up initial block fetching (not sure about generation)

[Mira]

I'm sure it's called libeatmydata for a reason. Sorry I don't trust computers enough to disable syncing to non volatile storage regularly. Even with UPS battery backup.

[R3gin3]

So I think that it will a good idea to add something about antivirus on official

That’s a good suggestion. I believe that this would prevent us from false positive detection. Try to report this one to the antivirus, it would probably help.