Hey all,
I have had problems where Facebook and other websites are not having their cookies remembered..
I am aware that I am not alone with this problem,
I have however, found a link that apparently fixes it.
What is good news is that anyone with this problem who has an unlocked phone (not an official phone) can fix this problem. So basically that is everyone here!
iPhone Google Reader/Gmail/Facebook Cookie Fix
Here is further explanation that I found...
"Yes, unfortunately your phone needs to be jailbroken for you to fix this yourself. If you have a pristine locked phone with this problem, you need to wait for Apple to fix it. Another good reason for open hardware!
If you have a jailbroken phone, you can just install the Term-vt100 package from installer (under System I think). Then type in the commands in the terminal window.
The numbers 777 and 666 are file access modifiers. 777 is for the Cookies directory, and means "make this directory able to be opened, read and written by anyone". 666 is similar but for the cookies file (most files don't need "execute" access, which 7 is). There's an excellent explanation of chmod and permission masks here:
CGI: CHMOD
In theory you shouldn't have to make the files writeable by anyone, if we can find out what user Safari is running as. However, there is really very little risk to making them writable. Even if a malicious user or virus got onto your phone, the last thing they will be looking for is your cookies."