It appears that the new beta sp1 for the 4.91 client fixes contextless
login with ssl. We have been unable to upgrade to this version (4.91) due
to this issue - which stopped our useage of NMAS/Strong Password and held
up our Universal password + Nsure installation.

I installed it yesterday, and no problems locking or unlocking
workstation or logging in with ssl and contextless login. It also appears
to have sped up contextless lookup to less then a second. We have 4000
objects in our tree.

Just thought I would post this, in case anyone else has had this issue.
Now we just have to wait for the official release of the SP.