>>I think servers will show up more than once if you've logged in using different credentials?
>
>I only have one account on that server and that's the one that I have been using all the times to go in SSMS.
>
>>Seems like you need to delete the 'mru.dat' file in the user settings ( on this machine it's in
>>D:\Documents and Settings\Administrator\Application Data\Microsoft\Microsoft SQL Server\90\Tools\ShellSEM)
>>But that's an all or nothing approach - if you delete it you lose everrything :={
>
>I removed it and everything is still there when I start SSMS and try to connect.

Hmm. Worked for me (but I wish I hadn't tried it :-{

> On that server, under my account, there was a directory from 90 and another for 100. 100 did not contain any mru.dat file.

Maybe it's version dependent. Googling suggests that this info might also be in
.....\Application Data\Microsoft\Microsoft SQL Server\100\Tools\Shell\SqlStudio.bin