Go into your LW library & check out the uploads column. The number on the right is how many times an upload's been attempted. Number on the left shows the number of successful uploads. Has anyone been able to upload?

If you don't see any successful uploads go to tools > options > bug reports > view example. Scroll down to 'recieved incoming this session'... it it true or false? If it's false then there's a firewall somewhere that's preventing people uploading from you! Do you see the LW firewall icon (brick wall in front of the blue earth)?

If you do have a firewall problem, read through this & make sure your software firewall's configured. Also check out the info about internal firewalls within modems & routers (UPnP & port forwarding info)
Connection problems? Check here first!