Hi everyone My powerbook G4 keeps freezing all the time. The original hard drive died so I gave it to my brother who had it "fixed" in the States. The shop replaced the hard drive and installed more memory. ever since the powerbook became an absolute pain to use. It just freezes. Nothing works, the pointer is frozen, nothing happens whatever i try to press/do. There seems to be no patterns to freezes. they just happen. sometimes i get 3-5 freezes within an hour of using it. I googled the issue, and tried all the things people suggested. I have swapped ram and made sure that it is properly in. I ran memtest on it - 10 runs. I re-installed Tiger (archive and install). I used applejack and ran full tests. I used disk repair through the tiger dvd. I just do not know what else to do with it other than throw it against the wall and then use it as an excuse to buy a new one. Here are the specs i have: CPU Speed: 1.67 GHz L2 Cache (per CPU): 512 KB Memory: 2 GB Bus Speed: 167 MHz Boot ROM Version: 4.9.6f0 SODIMM0/J20STANDARD: Size: 1 GB Type: DDR2 SDRAM Speed: PC2-4200S-444 Status: OK SODIMM1/J23REVERSED: Size: 1 GB Type: DDR2 SDRAM Speed: PC2-4200S-444 Status: OK Thank you very much in advance for your help.