Thanks
Have updated Java to v1.5 and connection re-established. Also tried the test page and got message
Your test page was a success! ... this wouldn't display before.
Azurues has been flagging up some connection issues of late with links being dropped every so often. It suggest this might be caused by a bug in v1.4 and to update to v1.5 but it wasn't causing me too many problem so didn't think it important. Had downloaded the update but not installed.
Strange why Limewire worked OK this morning but not this afternoon.
Thanks for your help.