Comment 4 for bug 504258

As some form of workaround, I removed all non-essential mounts (namely all vfat mounts) from /etc/fstab, mounting them manually after I log in. The system appears to be booting regularly now, although it is still printing the ureadahead errors posted above.
So it is probably dependent on the number of mounts - with too many parallel mount requests, the probability that the vital mounts are processed in time (i.e., before the parallel bootup process starts accessing things that are not yet available) will get smaller. But that's just what my guts say.

Is this a known phenomenon? Any tips/ways to change my configuration in a way that will fix this? Does somebody know the cause of this problem?

Thanks for any insight.