Lately, my Mac Pro has started suffering from unrecoverable FBD errors and required restarting daily. I had to restart it both yesterday evening when I came home from work and then again this morning when I toke up. I was only running BOINC on both occassions. In January, I upgraded the RAM from the stock 1GB with 2 1GB hygynx (sp?) FBDIMMS. It passed 5 REMBER loops after the install and I've not had a problem with it until this past week. Last night, I ran REMBER again with no errors detected. When I woke this morning I found the restart message again. This time, I turned the Mac off and removed the hygynx chips. They were incredibly hot to the touch. So I'm wondering if that may have something to do with the errors I'm getting. Currently, it's back in the stock 1 GB confirguration until I figure out the next steps. The recent cold spell here has prompted me to turn the heat up in the house....ergo, higher ambient temperatures. Will this have a serious affect on the Mac's internal temps? Is there anything else I should consider? Thanks!