I always get "communication deferred" status for LHC@home. I tried out SETI@home to see if it worked with that, but i get the same problem. Linux x86.
I heard that boinc uses port 80, and that computer also serves as an HTTP server. Could that be the problem? If not, what is and how do I solve it?

Thanks

BOINC communicates with the project servers on port 80 and 443, so you need to enable BOINC through your firewall on those ports.

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Both ports opened, but both projects saying communication deferred :(

Log:
Wed 24 Sep 2008 07:33:43 BST|ABC@home|Sending scheduler request: Requested by user. Requesting 0 seconds of work, reporting 0 completed tasks
Wed 24 Sep 2008 07:33:48 BST|ABC@home|Scheduler request succeeded: got 0 new tasks
Wed 24 Sep 2008 07:33:54 BST|lhcathome|Sending scheduler request: Requested by user. Requesting 30233 seconds of work, reporting 0 completed tasks
Wed 24 Sep 2008 07:33:59 BST|lhcathome|Scheduler request succeeded: got 0 new tasks

Nope, no tasks :(
When i was running SETI, i had one downlo0ad in the download tab, but it didnt actually do anything/download....

Both ports opened, but both projects saying communication deferred :(

Log:
Wed 24 Sep 2008 07:33:43 BST|ABC@home|Sending scheduler request: Requested by user. Requesting 0 seconds of work, reporting 0 completed tasks
Wed 24 Sep 2008 07:33:48 BST|ABC@home|Scheduler request succeeded: got 0 new tasks

So, that explains why ABC didn't send work. Remains the question why your PC didn't request any.

Wed 24 Sep 2008 07:33:54 BST|lhcathome|Sending scheduler request: Requested by user. Requesting 30233 seconds of work, reporting 0 completed tasks
Wed 24 Sep 2008 07:33:59 BST|lhcathome|Scheduler request succeeded: got 0 new tasks

According to Dagorath, this is normal for LHC. However, my log entries for SETI looked like this last night:

24/09/2008 04:21:20|SETI@home|[sched_op_debug] Starting scheduler request
24/09/2008 04:21:20|SETI@home|Sending scheduler request: To fetch work. Requesting 918 seconds of work, reporting 0 completed tasks
24/09/2008 04:21:25|SETI@home|Scheduler request succeeded: got 0 new tasks
24/09/2008 04:21:25|SETI@home|[sched_ops_debug] Server version 603
24/09/2008 04:21:25|SETI@home|Project requested delay of 11.000000 seconds
24/09/2008 04:21:25|SETI@home|[sched_op_debug] Deferring communication for 12 min 46 sec
24/09/2008 04:21:25|SETI@home|[sched_op_debug] Reason: no work from project

If you want to get the same additional messages, you must create a text file named cc_config.xml in your BOINC data directory (if it doesn't exist already). The data directory is mentioned in the message tab of BOINC manager.
With a text editor, enter the following into that file:

<cc_config>
    <log_flags>
        <sched_op_debug>1</sched_op_debug>
    </log_flags>
</cc_config>

There's a digit 'one' between <sched_op_debug> and </sched_op_debug>
More information to cc_config you can find here.
In BOINC Manager (Advanced view) select menu 'Advanced->Read config file' to activate the new configuration.

Gruß,
Gundolf

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Computer sind nicht alles im Leben. (Kleiner Scherz)

Right, I've left it on overnight and it seems to have mysteriously fixed itself and i now have some tasks... thanks for your help anyway :)