is it safe to delete from quaratine

[anirban]

i have installed malwarebytes free yesterday,and in few minutes it detected ,thanks for it,but is it safe to delete from quarantine.this time i deletd the infectd ones.below is the log file

Malwarebytes' Anti-Malware 1.30

Database version: 1357

Windows 5.1.2600 Service Pack 3

11/3/2008 1:46:19 AM

mbam-log-2008-11-03 (01-46-19).txt

Scan type: Full Scan (C:\|D:\|)

Objects scanned: 74870

Time elapsed: 41 minute(s), 35 second(s)

Memory Processes Infected: 0

Memory Modules Infected: 0

Registry Keys Infected: 7

Registry Values Infected: 1

Registry Data Items Infected: 0

Folders Infected: 0

Files Infected: 0

Memory Processes Infected:

(No malicious items detected)

Memory Modules Infected:

(No malicious items detected)

Registry Keys Infected:

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{2a2462ba-8a0d-436e-8811-66e69ad36b7d} (Trojan.Agent) -> Quarantined and deleted successfully.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{2a2462ba-8a0d-436e-8811-66e69ad36b7d} (Trojan.Agent) -> Quarantined and deleted successfully.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MS Juan (Malware.Trace) -> Quarantined and deleted successfully.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\contim (Trojan.Vundo) -> Quarantined and deleted successfully.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MS Track System (Trojan.Vundo) -> Quarantined and deleted successfully.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\rdfa (Trojan.Vundo) -> Quarantined and deleted successfully.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RemoveRP (Trojan.Vundo) -> Quarantined and deleted successfully.

Registry Values Infected:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks\{2a2462ba-8a0d-436e-8811-66e69ad36b7d} (Trojan.Agent) -> Quarantined and deleted successfully.

Registry Data Items Infected:

(No malicious items detected)

Folders Infected:

(No malicious items detected)

Files Infected:

(No malicious items detected)

how do i know next time whether it is safe to delete or not.

[AdvancedSetup]

Hello and Welcome to Malwarebytes.org

For now please do not delete the quarantined files.

Please read and follow the instructions provided here: Pre- HJT Post Instructions

When ready please post your logs here: Malware Removal - HijackThis Logs

Someone will be happy to assist you further with cleaning your system.

During this scan and cleanup process you should not install any other software unless requested to do so.