Using the 1.2x branch of Subclipse, you might recognise when accessing a rep via https:// that it doesn’t seem to be possible to get the SSL certificate accepted permanently.
Here’s my workaround:
- Change from „JavaHL“ to „SVNKit (Pure Java)“ in Window->Preferences.
- Access the rep again.
- Change back to JavaHL (e.g. because of necessary NTLM authentication).
Should work now 🙂