It may be that the file is no longer in the temp folder so it can't be moved, this is usually as a result of temp cleaners, ccleaner being one there are others and there may be other settings that will clear temp folders.
If the file isn't physically in that location I would think you are OK. I would suggest that you clear all temp folders,
ClearProg - Temp File Cleaner or
CCleaner - Temp File Cleaner, don't enable clearing temp folders on boot.
If you haven't already got this software (freeware), download, install, update and run it, preferably in safe mode.
1. If using winXP
SUPERantispyware On-Demand only in free version. Or
AVG anti-spyware (formerly Ewido) Resident scanner during trial On-Demand after trial ends. Or
Spyware Terminator Resident scanner.
Whilst the windows XP firewall is usually good at keeping your ports stealthed (hidden) it provides no outbound protection and you should consider a third party firewall.
Any malware that manages to get past your defences will have free reign to connect to the internet to either download more of the same, pass your personal data (sensitive or otherwise, user names, passwords, keylogger retrieved data, etc.) or open a backdoor to your computer, so outbound protection is essential.
- There are many freeware firewalls such as, Comodo, PCTools Firewall Plus, Jetico, etc. - Zone Alarm free works fine with avast and has a reasonably friendly user interface, however, the free version is becoming bloated with trial ware and is also crippled as far as outbound protection goes In the Program Control, configuration area, the slider will only goes as far as Medium protection, if you want more you have to buy the Pro version.