My setting are:

Use no more than 1000000 GB disk space
Leave at least 1 GB disk space free
Use no more than 50% of total disk space
Write to disk at most every 60 seconds
Use no more than 50% of total virtual memory

and I have 11GB free on my reiserfs home partition that bonic is installed.

Yet is still says that I need to free 87332.0MB. I believe this is a bug? In the mean time like my other pcs are converted to folding for the time being.

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Yes, this sometimes happens with some versions of BOINC, trying a newer or older one should fix this problem.

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Out of curiousity, what does the system show when you issue the df -h command?

/dev/hdc3 183G 11G 163G 6% /
/dev/hdd2 166G 157G 9.0G 95% /mnt/home
none 506M 0 506M 0% /dev/shm

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/dev/hdc3 183G 11G 163G 6% /
/dev/hdd2 166G 157G 9.0G 95% /mnt/home
none 506M 0 506M 0% /dev/shm

Looks like the system is in agreement that there is plenty of space available.
This might sound silly after all this, but in looking back at your original post, I wonder if the setting you have for "Use no more than 1000000 GB disk space" is throwing things off.
That's a lot of of GB's. A lot more than the 183 GB or 166 GB total size showing for the drives. Have you tried setting that to an amount that is less than the total disk size, or at least a smaller value? I wouldn't think that setting it to a value larger than what's really available for total space would cause a problem, I have mine set at use no more than 100 GB on a 40 GB drive. But if a very large number there is causing something to overflow or wrap in a strange way, perhaps that's causing the discrepency in what's being reported as available. Just an off the wall thought.

/dev/hdc3 183G 11G 163G 6% /
/dev/hdd2 166G 157G 9.0G 95% /mnt/home
none 506M 0 506M 0% /dev/shm

Is this the same problem like on thread http://setiathome.berkeley.edu/forum_thread.php?id=18322 ?

Looks like the boinc client can't detect the free disk space.
Which boinc version do you use ? What OS do you use ?

Can you try to make a non reiserfs, and copy only the boinc_client to this filesystem, start it and abourt it after the benchmark was successfull run.
Then do a "grep d_free client_state.xml", to read out the detected memory.

You can try this also with a newer and a older boinc version, on a reiserfs and a non reiserfs to eliminate problems in the boinc client.

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