limitations/disadvantages to using the GAC

I have an assembly/ a dll which I'll be using throughout several different upcoming projects.

Rather than include this file in each project I wanted to use a way for each of the projects to use the same file. As these projects will all be on the same webserver & not needed to be used over a network or the internet, I've ruled out a webservice & looked into deploying this into the GAC.

I'm sure I picked up some drawbacks of using the GAC in the past, but now can't find anything on this on the web. Can anyone provide any articles/points on what the drawbacks are on using the GAC please????

Only drawback I can think of is that you can't use XCopy deployment. You will need to register the DLL in the GAC via an installer, or instruct the user how to do so manually.