I have detached my machine from Einstien@home as it does weird and not so wonderful things when running it.
Initially I was concerned that it took so long to crunch units when operating E@H, but chose to ignore it, however in the last week I have noticed the crunch times for both E@H and SETI extending into the tens of hours per unit. Suspecting I had a PC problem I started to investigate, but soon discovered that the issue was E@H.
If I run E@H on it's own on this machine, units take about 8 hours, the same is true for SETI, but with both projects attached to BOINC E@H goes weird on me. Crunch times extend out to more than 20 hours for SETI and E@H units to over 30hrs.
I have found no information on this on either FAQ and a trawl round the forums has not bee helpful either, so I have resolved to stop E@H until I can get my other machine back online and I will simply run E@H on that machine and not have two projects attached in one BOINC installation. However it could be several weeks before I get time to investigate and repair the machine..till then it is SETI on it's own at home!