disconnettiti da internet, chiudi tutti i programmi, apri HJT fai lo scan metti la spunta alle voci e clicca su Fix checked:

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://quickmetasearch.com/?said=acc0001_ho
R3 - Default URLSearchHook is missing
O1 - Hosts: 127.0.0.3 n-glx.s-redirect.com
O1 - Hosts: 127.0.0.3 x.full-tgp.net
O1 - Hosts: 127.0.0.3 counter.sexmaniack.com
O1 - Hosts: 127.0.0.3 autoescrowpay.com
O1 - Hosts: 127.0.0.3 www.autoescrowpay.com
O1 - Hosts: 127.0.0.3 www.awmdabest.com
O1 - Hosts: 127.0.0.3 www.sexfiles.nu
O1 - Hosts: 127.0.0.3 awmdabest.com
O1 - Hosts: 127.0.0.3 sexfiles.nu
O1 - Hosts: 127.0.0.3 allforadult.com
O1 - Hosts: 127.0.0.3 www.allforadult.com
O1 - Hosts: 127.0.0.3 www.iframe.biz
O1 - Hosts: 127.0.0.3 iframe.biz
O1 - Hosts: 127.0.0.3 www.newiframe.biz
O1 - Hosts: 127.0.0.3 newiframe.biz
O1 - Hosts: 127.0.0.3 www.vesbiz.biz
O1 - Hosts: 127.0.0.3 vesbiz.biz
O1 - Hosts: 127.0.0.3 www.pizdato.biz
O1 - Hosts: 127.0.0.3 pizdato.biz
O1 - Hosts: 127.0.0.3 www.aaasexypics.com
O1 - Hosts: 127.0.0.3 aaasexypics.com
O1 - Hosts: 127.0.0.3 www.virgin-tgp.net
O1 - Hosts: 127.0.0.3 virgin-tgp.net
O4 - HKLM\..\Run: [SearchUpgrader] C:\Programmi\Common files\SearchUpgrader\SearchUpgrader.exe
O4 - HKLM\..\Run: [Windows Service] C:\WINDOWS\System32\prvdi.exe
O4 - HKCU\..\Run: [Igmy] C:\WINDOWS\System32\r?gedit.exe
O4 - HKCU\..\Run: [Windows Service] C:\WINDOWS\System32\prvdi.exe
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} (RdxIE Class) - http://software-dl.real.com/16730ef...RdxIE601_it.cab

riavvia in modalità provvisoria (!) ed elimina:
C:\Programmi\Common files\SearchUpgrader \SearchUpgrader.exe <== la cartella
C:\WINDOWS\System32\prvdi.exe <== il file
C:\WINDOWS\System32\r?gedit.exe <== il file

sempre dalla provvisoria apri AdAware (aggiornato) fai una scansion elimina i valori.
Elimina il contenuto delle cartelle TEMP, temporary intenret files e cookies.
Collegati a
http://www.pandasoftware.com/actives..._principal.htm
fai una scansione online
Riavvia
Posta un nuovo log.