I have a 4-year-old Dimension 3000 and i recently reinstalled XP because it was having alot of issues (freezing, viruses, ect...).

3 months later it's freezing again. By freezing i mean it randomly crashes, causing the entire system to lock up (can't move cursor, have to unplug it to restart kinda thing). 

Any ideas?

Here's my specs:

3.0 Ghz Intel Celeron Processor

1 GB Ram

128mb ATI PCI graphics card

Win XP service pack 3

AVG 8 Internet security

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