Secunia Software Inspector

One click scan: takes less than a minute.[with Broadband]
Detects insecure versions of applications installed,
Verifies that all Microsoft patches are applied,
Assists you in updating your system and applications.

Runs through your browser. No installation or download is required.
No charge - no ads no spyware etc

Secunia is a respected computer secuity service provider.

http://en.wikipedia.org/wiki/Secunia

Originally posted by Dr Strangelove
One click scan: takes less than a minute.[with Broadband]
Detects insecure versions of applications installed,
Verifies that all Microsoft patches are applied,
Assists you in updating your system and applications.

Runs through your browser. No installation or download is required.
No charge - no ads no spyware etc

Secunia is a respected computer secuity service provider.

http://en.wikipedia.org/wiki/Secunia

err, this link was meant to be posted too.

http://secunia.com/software_inspector/