SQL Server Management Studio unresponsive after start-up

Hi, 
I'm using SQL Server express 2012, no problems until this morning. Every time I open it, it just go unresponsive completely, I just cannot do anything, not even close it except with the task manager. 
I haven't been able to find a solution. 
This an extract of the logs
2013-09-24 18:31:06.71 spid54      Starting up database 'ReportServerTempDB'. 2013-09-24 18:32:24.53 spid59      Starting up database 'ReportServerTempDB'. 2013-09-25 09:12:09.04 spid54      Starting up database 'ReportServerTempDB'. 2013-09-25 09:12:11.72 spid54      Recovery completed for database ReportServerTempDB (database ID 6) in 1 second(s) (analysis 506 ms, redo 0 ms, undo 137 ms.) This is an informational message only. No user action is required. 2013-09-25 09:12:18.39 spid53      Starting up database 'ReportServerTempDB'. 2013-09-25 09:12:23.52 spid53 & ...