Battery capacity is minimal, only about 2.5hrs. This is made worse by a tendency in the hardware of the 900 Celeron CPU to suck power even when the computer is turned off.
Can be picky about RAM. Might have to try more than one brand to get stable results.
alterations/upgrades
2GB PNY DDR2 (PC2-5300) for $17
8GB MicroCenter SDHC for $15. I do backups on the card, and keep downloads there.