Hard reset is kinda overtkill don't you think, and it's not helping at all?
Simplest method in unhacking.
Removed installserver.exe from C/sys/bin if you using it instead of installserver.rmp
Removed RomPatcher and Symantac Symbian Hack.
Been using a hacked symbian since 2007, so far the only threat i see is stupidity.
Viruses?
What's that? A new apps!