Having two computers with LibreOffice 4.4: 1 - Windows 7 x86, Core 2 E6400, 4Gb RAM, Kingston 120 Gb SSD V300 2 - Windows 7 x64, Core i5 M560, 4Gb RAM, Kingston 120 Gb SSD V300 LibreOffice startup times respectively: 1 - 5 seconds 2 - 25 seconds Tested on LibreOffice 4.2 through 4.4. It seems that LibreOffice takes longer time to start on a 64-bit system. Steps done to shorted the startup time: 1. Added a string "127.0.0.1 <Computername>" to the HOSTS file. 2. Reduced the undo steps number in settings down to 30. Both solutions didn't help.
For the test, could you rename your LO directory profile? (see https://wiki.documentfoundation.org/User_Profile#Windows) You must know that the next restart will be longer since LO will recreate a brand new profile.
Thank you, resetting the user's profile seems to has solved the problem.
worksforme since we don't have a specific commit fixing this problem.