So you're using a standalone computer connected directly to the internet? Or it's somehow networked to other computers ... perhaps via a router or network card? The reason I'm asking is I'm wondering if anybody at work may be able to control how much interaction you have with the internet.

Did you configure your firewall so it allows LW full access (advisable not to have 2 active firewalls b/c they can interfere with each other); Firewall configuration instructions (click on link)

Also check to see if there's any utility programs such as anti-virus, anti-spyware & anti-adware programs on the computer. 'Some' require a program permission to connect to the internet. If you do have such programs then check their options/preferences settings.