BIG memory leak in develop module 3.2RC

Question

I've been getting "unknown error occurred" crashes ever since I upgraded to LR3.  Today I'm doing (supposedly) a rush job and getting crashes after processing every 5 or 6 images.  So I've done some investigation.
Here's the set up. 
Win XP SP3.  4Gb memory installed (yes, I know XP can't address all of it)  /3Gb option NOT set.
Intel Core2 Quad CPU, 2.4GHz
Lightroom 3.2RC.
Windows Task Manager open on the processes tab
Lightroom is the ONLY significant application running on the PC (yes there is AV, and a host of other bits in the right side of the task bar, such as printer monitors etc, but task manager shows that only Lightroom uses any significant CPU cycles and memory used by other processes is fairly minimal.
Folder of 296 images selected, filtered to only show the flagged images (99 of them)
Here's the memory used BY LIGHTROOM as reported by Windows Task Manager....  (Memory figures were after CPU usage from lightroom had dropped to zero and the memory figure had become steady)
Open Lightroom         455,816K
Incr Brightness        457,988K
Next Image             620,796K
Incr Fill,Bright,Exp   647,768K
Next Image             814,968K
Incr Fill,Bright       828,112K
Set rating             490,328K  (See Note)
Next Image             646,952K
Incr Bright            664,564K
Next Image             848,140K
Incr Bright,Blacks     854,784K
Next Image           1,003,988K
Incr Bright,Exp      1,005,800K
Next Image           1,166,936K
Incr Fill,Bright     1,153,431K
Next Image           1,286,465K
short pause... "An Unknown Error Occurred"
Memory drops back to 1,171,380K
Repeat after reboot of PC
Open Lightroom         455,592K
Incr Fill              475,124K
Next Image             640,126K briefly then 446,704K  (See Note)
Incr Fill,WB           467,632K
Next Image             632,144K
Incr Fill,Bright,WB    654,412K
Next Image             814,136K
Incr Bright,Fill,WB    839,540K
Next Image           1,000,780K
Incr Bright,Fill,WB  1,006,766K
Next Image           1,165,644K
Incr Fill,WB         1,169,664K
Next Image           1,287,056K
short pause... "An Unknown Error Occurred"
Memory drops back to 1,169,376K
I've done this many times and watched the same pattern each time (I've only noted the figures down twice as shown above).  It is noticable that the memory 'loss' appears to happen at the point when I move from one image to the next.  The memory lost each time is consistently around 180,000K.
NOTE: Once on each of the runs when I was recording the memory useage I did see memory released.  The first time was in response to setting a rating for the image.  This is the ONLY time I have seen that happen at the same time as setting a rating and I'm inclined to think it a co-incidence.  On the second run above the memory was release after moving to the next image on one occasion.  I have not found any patter to when the occasional release of memory occurs.
What is very consistent is that whenever the memory used by lightroom goes over 1,200,000K.  The program displays the "Unknown Error Occurred" message and the program either hangs or becomes so unresponsive that the only option is to shut down lightroom and restart. 
Ian.  :-(

Answer 1

Hi,
I can confirm this problem on a windows 7, 64 bit system. With 4GB of memory LR stays usuable for while, with 2GB problems start very quickly.
Apart from that the RC is very good and integrates the much needed SONY NEX support.
Regards