Yield - the "data acquisition" stuff being down has nothing to do with whatever's going on, but has everything to do with what the equipment over at Arecebo in Puerto Rico is doing. This has no immediate impact on the ability for Berkeley to be able to either split their current data tapes to create new WUs and/or dish out/receive WUs to/from clients. If anything, it'll mean that down the road, we'll have ALOT more "repeat" WUs than normal, but that's about it.
What is happening could be a network problem on their campus. It has happened many times before. I routinely send results from my queue to Berkeley from 3am - 4am EST. All of my results were uploaded okay at that time and my queue was topped off, so whatever probably occurred, happened after that time - usually 6am EST or 3am PST (a time when they'll often "change stuff" on campus). Alternately, perhaps a swap file filled up or something happened to their RAID array or other disks... These have been the most common excuses...
I am very glad that my queue has 218 WUs in it... I try to keep 10 - 14 days worth as I know that the longest outage they have had (eg., after a fiber cable cut) was ~5 - 7 days, with it taking a day or so more for me to connect to them due to the massive amount of traffic from others trying to do the same.
(After 2+ years in this project, I KNOW better... 😛)