I solved my prob by getting my friend's game folder and use his
to overwrite mine.
But Cabal installation file already 2gb hor...=X might take a
while to transfer the whole folder in your case hehe.
yup 2gb 
i saw this in pp forums posted by SoulReaper:
posted by SoulReaper:
Hi to all AVG users. AVG is never lame, nor stupid or rubbish.
They're one of the leading anti-virus softwares currently in the
market and being widely used by corporates (*Wildly use by home
users too). You just don't know how to utilize it because this
software is not meant for IT-illiterates.
If you see trojan horses being detected while installing Cabal, do
not panic or worry because not all trojans do harm to your
computer.
When you download the new client, and if the Resident Shield pops
up saying it is a trojan horse, do the following: (AVG
8.0.100)
1. Click Ignore
2. Go to your AVG Resident Shield
3. Click Manage exceptions
4. Tick the 'use excludes for the Resident Shield'
5. Add path c:\wherever you put your entire Cabal Folder
6. Click ok and save changes
7. Run your cabal.exe
8. Come back here and say many thanks.
Note*: Disabling Resident Shield will result in your computer being
exposed to REAL threats.
Cheers.
hopefully the trojan issue will be solved..
but i'm still paranoid cause it seems there's not yet
an official reply from asiasoft regarding this issue