James Wilkinson wrote: >> The easiest way to check swap is to run free (from a command prompt). It >> reports: >> $ free >> total used free shared buffers cached >> Mem: 1025568 1012780 12788 0 74376 616300 >> -/+ buffers/cache: 322104 703464 >> Swap: 2024108 196 2023912 >> >> saying I have 2 GB of swap, of which 196K is used. Yes, that helps. Free reports: $ free total used free shared buffers cached Mem: 256212 58400 197812 0 1912 28416 -/+ buffers/cache: 28072 228140 Swap: 524280 87600 436680 So it does look like I have swap turned on. Some further testing indicates that the removal of old kernel-devel packages (15 of them) is at least part of the problem. I tried running: $ package-cleanup --oldkernels from yum-utils. That resulted in the same error as did my big yum update (which was "memory alloc (4 bytes) returned NULL"). So I tried: $ yum remove kernel-devel-2.6.12-*_FC4 Figuring that 15 was too many to remove at once so just remove these 5. Same error. In fact, attempting to remove just one kernel-devel package resulted in this error. Is there another way to remove them that may work? -- Henry