I think the problem is on my end, because it is only happening on one machine. Powermac G5 Dual 2.3 OS X 10.4.11 I Can't attach to any projects or submit completed work units, I have tried uninstalling and reinstalling the client, restarting my computer including deleting data and preferences files. It's also worth noting that none of the other machines are PPC macs.

Sun Apr 25 05:51:26 2010		Starting BOINC client version 6.10.43 for powerpc-apple-darwin
Sun Apr 25 05:51:26 2010		log flags: file_xfer, sched_ops, task
Sun Apr 25 05:51:27 2010		Libraries: libcurl/7.19.7 OpenSSL/0.9.7l zlib/1.2.3 c-ares/1.7.0
Sun Apr 25 05:51:27 2010		Data directory: /Library/Application Support/BOINC Data
Sun Apr 25 05:51:27 2010		Processor: 2 Power Macintosh Power Macintosh [Power Macintosh Model PowerMac7,3] [AltiVec]
Sun Apr 25 05:51:27 2010		Processor features: 
Sun Apr 25 05:51:27 2010		OS: Darwin: 8.11.0
Sun Apr 25 05:51:27 2010		Memory: 3.50 GB physical, 179.23 GB virtual
Sun Apr 25 05:51:27 2010		Disk: 233.64 GB total, 178.99 GB free
Sun Apr 25 05:51:27 2010		Local time is UTC -6 hours
Sun Apr 25 05:51:27 2010		No usable GPUs found
Sun Apr 25 05:51:27 2010		No general preferences found - using BOINC defaults
Sun Apr 25 05:51:27 2010		Reading preferences override file
Sun Apr 25 05:51:27 2010		Preferences:
Sun Apr 25 05:51:27 2010		   max memory usage when active: 1792.00MB
Sun Apr 25 05:51:27 2010		   max memory usage when idle: 2688.00MB
Sun Apr 25 05:51:27 2010		   max disk usage: 10.00GB
Sun Apr 25 05:51:27 2010		   (to change, visit the web site of an attached project,
Sun Apr 25 05:51:27 2010		   or click on Preferences)
Sun Apr 25 05:51:27 2010		Not using a proxy
Sun Apr 25 05:51:27 2010		This computer is not attached to any projects
Sun Apr 25 05:51:27 2010		Visit http://boinc.berkeley.edu for instructions
Sun Apr 25 05:51:32 2010		Fetching configuration file from http://www.worldcommunitygrid.org/get_project_config.php
Sun Apr 25 05:51:57 2010		Project communication failed: attempting access to reference site
Sun Apr 25 05:51:59 2010		Internet access OK - project servers may be temporarily down.

Try if 6.10.44 can do it. It was built with c-ares 1.6.0 instead of c-ares 1.7.0, because the newer c-ares has problems resolving host names on OS 10.6 with default settings when used with AT&T U-Verse 2Wire gateway routers and Airport.

And if that one then works, please consider becoming a BOINC alpha tester for the Mac. Please see this thread for more information.

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Thanks, that has resolved my issue.
and thanks for the quick reply. I do have a 2wire router(A "gift" from my isp) I have sent an email to become an alpha tester.

You're welcome. :) Thank you for helping this and future BOINC versions progress.

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