[Shotwell] shotwell consumes all available memory on startup

[John Carlyle-Clarke]

I'm having a problem with shotwell 0.8.1 on Archlinux 64-bit.  When I 
start it, the progress dialog appears, followed by the UI.  After a few 
seconds, the UI becomes unresponsive and it starts to increase its 
memory usage until it consumes all RAM and swap.

The end of the strace, which coincides with the beginning of the 
increasing memory use, is:-

futex(0x7f6893be1ea0, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f6894830528, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f6894830528, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f6894830528, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource 
temporarily unavailable)
futex(0x7f6894830528, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f689508d8e8, FUTEX_WAKE_PRIVATE, 1) = 0
brk(0x5a2d000)                          = 0x5a2d000
brk(0x5a88000)                          = 0x5a88000
mmap(NULL, 499712, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 
0) = 0x7f6888c62000
mmap(NULL, 999424, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 
0) = 0x7f6888b6e000
mmap(NULL, 1994752, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 
0) = 0x7f6888987000
futex(0x7f6893be1ea0, FUTEX_WAKE_PRIVATE, 1) = 1
mmap(NULL, 3985408, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 
0) = 0x7f68885ba000
mmap(NULL, 7966720, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 
0) = 0x7f687ad4f000
futex(0x7f6893be1ea0, FUTEX_WAKE_PRIVATE, 1) = 1
mmap(NULL, 15929344, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 
-1, 0) = 0x7f6879e1e000
mmap(NULL, 31854592, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 
-1, 0) = 0x7f6877fbd000
futex(0x7f6893be1ea0, FUTEX_WAKE_PRIVATE, 1) = 1
mmap(NULL, 63705088, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 
-1, 0) = 0x7f68742fc000
mmap(NULL, 127406080, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 
-1, 0) = 0x7f686c97b000
mmap(NULL, 254808064, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 
-1, 0) = 0x7f685d67a000
mmap(NULL, 509612032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 
-1, 0) = 0x7f683f079000
mmap(NULL, 1019219968, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 
-1, 0) = 0x7f6802478000
mmap(NULL, 2038435840, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 
-1, 0) = 0x7f6788c77000

Not sure what else I can usefully provide!  Let me know...

Thanks in advance.

John