I recently dumped the stock ROM on my Nexus One, after Google failed so many times to implement proper Arabic support and enable the FM radio, and installed CyanogenMod 7.1.0.
One issue is that the Google Apps bundle that is compatible with that bundle has a version of gtalk that is not compatible with the Nexus One, because the phone doesn't have a front camera.
I installed the latest gApps and then grabbed a Gingerbread stock ROM and took the talk.apk file from it and installed it. Now GTalk works.
The stock ROM is about 80 MB, so I took the liberty of uploading the file for you here:
talk.apk (600 kB): 67e322ecdd038cfc4344b6a5ee4cf1da (md5 sum)
Copy it to your SD card then open the file manager and install it.
One issue is that the Google Apps bundle that is compatible with that bundle has a version of gtalk that is not compatible with the Nexus One, because the phone doesn't have a front camera.
I installed the latest gApps and then grabbed a Gingerbread stock ROM and took the talk.apk file from it and installed it. Now GTalk works.
The stock ROM is about 80 MB, so I took the liberty of uploading the file for you here:
talk.apk (600 kB): 67e322ecdd038cfc4344b6a5ee4cf1da (md5 sum)
Copy it to your SD card then open the file manager and install it.