I'm getting this message too; but generally on my Linux box (Redhat fc6 - I'd be running a more updated version, but when
I tried to run Folding 5.04 on a higher version, it would not run, so I back-revved.
This is the most recent log entries (21:18 EST, 2009-10-25):
--- Opening Log file [October 26 01:07:22]
# Linux Console Edition #######################################################
###############################################################################
Folding@Home Client Version 5.04beta
http://folding.stanford.edu
###############################################################################
###############################################################################
Launch directory: /home/tom/foldingathome
Executable: ./FAH504-Linux.exe
[01:07:22] - Ask before connecting: No
[01:07:22] - User name: tjclifford2 (Team 78002)
[01:07:22] - User ID: 1701BE9F58A44E17
[01:07:22] - Machine ID: 1
[01:07:22]
[01:07:23] Loaded queue successfully.
[01:07:23] + Benchmarking ...
[01:07:27] - Preparing to get new work unit...
[01:07:27] + Attempting to get work packet
[01:07:27] - Connecting to assignment server
[01:10:37] - Couldn't send HTTP request to server
[01:10:37] + Could not connect to Assignment Server
[01:10:37] - Successful: assigned to (171.67.108.13).
[01:10:37] + News From Folding@Home: Welcome to Folding@Home
[01:10:37] Loaded queue successfully.
[01:10:38] + Could not connect to Work Server
[01:10:38] - Error: Attempt #1 to get work failed, and no other work to do.
Waiting before retry.
[01:10:52] + Attempting to get work packet
[01:10:52] - Connecting to assignment server
[01:14:01] - Couldn't send HTTP request to server
[01:14:01] + Could not connect to Assignment Server
[01:14:01] - Successful: assigned to (171.67.108.13).
[01:14:01] + News From Folding@Home: Welcome to Folding@Home
[01:14:02] Loaded queue successfully.
[01:14:02] + Could not connect to Work Server
[01:14:02] - Error: Attempt #2 to get work failed, and no other work to do.
Waiting before retry.
[01:14:20] + Attempting to get work packet
[01:14:20] - Connecting to assignment server
[01:17:29] - Couldn't send HTTP request to server
[01:17:29] + Could not connect to Assignment Server
[01:17:30] - Successful: assigned to (171.67.108.13).
[01:17:30] + News From Folding@Home: Welcome to Folding@Home
[01:17:30] Loaded queue successfully.
[01:17:30] + Could not connect to Work Server
[01:17:30] - Error: Attempt #3 to get work failed, and no other work to do.
Waiting before retry.
[01:17:52] + Attempting to get work packet
[01:17:52] - Connecting to assignment server