If you have installed Cydia on your iPhone or iPod Touch running 3.X firmware there is a good chance that after instaling a bunch of applications you could get to a point that you are running out of disk space on the root partition. By default the root partition is going to only be 500MB and so far I have not found a great way to resize this so it is much easier to resolve using the below method. Cydia does a pretty good job of relocating a lot of the folders from the root (mounted at /) partition to larger var partition (mounted at /private/var).
I have been using the iPhone Analytics App available via the iTunes App Store for quite some time. It allows you to view all of the sites you have configured in Google Analytics in a very clean interface on your iPhone or iPod Touch. Recently when logging in I have been getting an error that my username and password are incorrect. The issue appears to be that Google recently modified the way others can access the web analytics data and have now provided a new API so the developers have mentioned that they are completely rewriting the application and will launch a new version in 2 to 3 weeks. The developers also have offered a refund to anyone asking though I would suggest everyone to hold on as they are being up front and they have the best Google Analytics application for the iPhone.
I have a second generation iPod Touch that is out of warranty and the power button is broken. Figuring out how to get the Touch into DFU mode was not easy as there are numerous hints out there at how to do this but most say things will break if you are running firmware 3.0+.
Once you jailbreak your iPhone or iPod Touch there are tons of benefits available to you in the form of innovative applications that are not locked down by Apple. One of my iPod Touch’s is pretty beat up and no longer under warranty so I use it to test all sorts of things including being the first device I ever installed Cydia and Icy on. Anyhow the Touch device actually has a semi busted LCD screen, a broken power button, and a broken home button. On a iPhone running default firmware you would be pretty much out of luck if the home button or power button was not working but once the device is jailbroken then you can get around all of these issues easily.
I recently got into some trouble while playing around with my iPod Touch 2G in which I thought the device was bricked. It was not recognized when plugged into the USB port on a Windows XP computer and it appeared no matter what I did it was not able to power on. When restoring some firmware onto the iPod Touch 2G the device never came back from a reboot. Even worse yet was the fact that the power button was not fully operational so I was never sure if I was actually getting the correct button press to put the device into DFU mode. Below are some tips that could assist you to recover the device from this step.