@the freetard AC bitching about IT folk changing their homepage
Dude, it's not your computer. Your company can do what the hell it likes including changing your screensaver, homepage, desktop and icon size.
If you work for a company that is very restrictive about what it lets you do then that is because they don't place much trust in you, this is probably because you are an idiot.
Alternatively it could be because there are regulatory or compliance reasons that are beyond your small bear brain.
There is, of course, a chance that your IT people are just fucking with you so speak to your manager if you have a complaint; that should give you an idea of how much/little contempt your manager and those higher up the foodchain have for your opinion.
IT sometimes to stuff like that for shits and giggles but they risk a sacking if they don't have a good reason. Quite often the business will mandate that the company intranet is the homepage rather than whatever site you prefer. This will be for consistency and to encourage people to use their browser as a tool and not a toy.
Proxy settings may be configured to ensure that you use the right infrastructure, they may be doing this to prevent idiots logging helldesk calls when their browser does not work (because the proxy is not configured).
Screen backgrounds may be configured to stop people putting up shit like their football team which always makes offices look like they are staffed by wankers.
Screensavers, timeouts and password requirements are often configured and forced because there may be security concerns when people leave unlocked desktops.
I had a guy once who wanted pics of his family on his screensaver so he set that up despite being told not to. He had failed to realise that he also had scans of confidential docs and some specialist photos of the Mrs in the same folder so whenever he went away to make a cuppa his screen was filled with confidential docs and pictures of his wife's growler. He was sacked and we implemented a policy forcing a standard corporate screen saver.
I also remember at another company seeing a measurable spike on electricity usage the month people decided to install seti @ home. The company chose not to fund Seti by paying higher electricity bills.
Try to think of these things from your employer's point of view and from the perspective of the IT people who have to look after the network on a finite budget and then you won't gob off and sound like a tremendous wanker.