Minha maquina tava travando também com o ubuntu 8.04 64 bits, entao lendo na internet, verifiquei atraves de varios depoimentos q nao haveria quase perca de performance em usar o 32 bits, o q estou fazendo agora, e também a compatibilidade com os programas seria bem maior, mas depois de umas quatro horas de uso, baixando programas na internet, ele travava, pensei ser a wireless, mas no windows nao fazia isso, atualizei o sistema para o kernel mais recente, retirei uns serviços desnecessários do boot, e parou de travar, ainda nao sei com certeza a causa do problema, mas creio ter sido o kernel mesmo, nao testei mais o 64 bits com o novo kernel, vou deixar o ubuntu ficar mais maduro com relaçao a plataforma 64 bits, abaixo a configuraçao da minha maquina:
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System information report, generated by Sysinfo: 14/8/2008 20:35:57
http://sourceforge.net/projects/gsysinfoSYSTEM INFORMATION
Running Ubuntu Linux, the Ubuntu 8.04 (hardy) release.
GNOME: 2.22.3 (Ubuntu 2008-07-09)
Kernel version: 2.6.24-19-generic (#1 SMP Fri Jul 11 23:41:49 UTC 2008)
GCC: 4.2.3 (i486-linux-gnu)
Xorg: unknown (13 June 2008 01:08:21AM) (13 June 2008 01:08:21AM)
Hostname: infowork
Uptime: 0 days 4 h 6 min
CPU INFORMATION
AuthenticAMD, AMD Athlon(tm) 64 X2 Dual Core Processor 4000+
Number of CPUs: 2
CPU clock currently at 2099.822 MHz with 512 KB cache
Numbering: family(15) model(107) stepping(1)
Bogomips: 4204.92
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy 3dnowprefetch ts fid vid ttp tm stc 100mhzsteps
MEMORY INFORMATION
Total memory: 1009 MB
Total swap: 509 MB
STORAGE INFORMATION
SCSI device - scsi0
Vendor: ATA
Model: MAXTOR STM316021
SCSI device - scsi2
Vendor: TSSTcorp
Model: CDDVDW SH-S202J
HARDWARE INFORMATION
MOTHERBOARD
Host bridge
Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
Subsystem: VIA Technologies, Inc. K8M800 Host Bridge
PCI bridge(s)
VIA Technologies, Inc. VT8237 PCI bridge [K8T800/K8T890 South] (prog-if 00 [Normal decode])
USB controller(s)
VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) (prog-if 00 [UHCI])
VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) (prog-if 00 [UHCI])
VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) (prog-if 00 [UHCI])
VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) (prog-if 00 [UHCI])
VIA Technologies, Inc. USB 2.0 (rev 86) (prog-if 20 [EHCI])
ISA bridge
VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800/K8T890 South]
Subsystem: Biostar Microtech Int'l Corp Unknown device 3206
IDE interface
VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP])
Subsystem: Biostar Microtech Int'l Corp Unknown device 3206
GRAPHIC CARD
VGA controller
nVidia Corporation NV44A [GeForce 6200] (rev a1) (prog-if 00 [VGA controller])
Subsystem: XFX Pine Group Inc. Unknown device 2144
SOUND CARD
Multimedia controller
VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
Subsystem: Biostar Microtech Int'l Corp Unknown device 8215
NETWORK
Network controller
RaLink RT2561/RT61 rev B 802.11g
Subsystem: Unknown device 5a57:0361
Ethernet controller
VIA Technologies, Inc. VT6102 [Rhine-II] (rev 78)
Subsystem: Biostar Microtech Int'l Corp Unknown device 2200
NVIDIA GRAPHIC CARD INFORMATION
Model name: GeForce 6200
Card Type: AGP 8x
Video RAM: 128 MB
GPU Frequency: 350 MHz
Driver version: NVIDIA Linux x86 Kernel Module 96.43.05 Tue Jan 22 19:36:58 PST 2008