I was installing centos 5.3 x86_64 on a sempron 2.7G machine with 512M ram. The install started off fine then REALLY SLOWED down about 70% into install. I did have a swap space. after that it just crawled. I tried restart the install a couple times at 512M. Same thing around 70% the slow down. I then put in 1G of RAM and everything zipped on past and finished fine. Does 5.3 have minimum installation RAM requirements? I had not noticed. Does the same apply for running? 5.2 did not seem to have any issues running in 512M that I recall. Thanks for your comments. jerry