heartache Cooljoke

Starting on 6/28/2013, every time I try to log in, all I get is this error message and I can't log in : " Login failed. Updating friends list. " I have uninstalled all but the one viewer I use, which is Singularity and I have done a clean install of the latest version too. Any idea or help greatly appreciated. Thank you. 6-30-2013 UPDATE - after some research I found the answer and it was really easy - all I had to do was download the latest Linden Labs SL Viewer and log in with it and that solves this problem ! Now my Singularity Viewer works perfectly fine as it did before ! Thanks to those who posted replies here - I had found this solution while researching in the middle of the night after I had first seen this problem and before I saw any replies here to my post - but thank you for posting your replies and answers and thank you most of all for the time and concern shown for this problem I posted !!! Thank You !

Bought some lindens on the SL website but it did not get filled right away, it was left as an open order. How long does it usually take for an open order to be filled then ?