ps2 mouse and keyboard not working

[reverbio]

I have installed leopard 10.5.2 everything working fine except ... after updating using software update .

 

when booting to leopard the ps2 wired mouse and keyboard seem to have been replaced with usb mouse and keyboard drivers ie if i plug my mouse into the usb port it works ( a lot slower though ) but no keyboard ?

 

however booting in safe mode lets me use the ps2 wired mouse and keyboard as before updating ?

 

is there something that needs removing or changing ? a driver or kext or something to prevent the system from using usb mouse/keyboard and defaulting to ps2 instead ?

 

Hope it's as simple as it should be . was working great a week ago

 

 

Model Name: Mac

Model Identifier: P35-DS3L

Processor Name: Intel® Core2 Quad CPU Q6600 @

Processor Speed: 2.4 GHz

Total Number Of Cores: 4

L2 Cache (per processor): 4 MB

CPU Features: FPU VME DE PSE TSC MSR PAE MCE CX8 APIC SEP MTRR PGE MCA CMOV PAT PSE36 CLFSH DS ACPI MMX FXSR SSE SSE2 SS HTT TM SSE3 MON DSCPL VMX EST TM2 SSSE3 CX16 TPR PDCM

Memory: 4 GB

Bus Speed: 1.07 GHz