Redmine

I've used Redmines file tab to store VM images. I'v encountered long loading time (firefox tends to cancel the connection, resulting in failed upload, chrome is ok) and massive CPU utilization of the ruby process after the file is uploaded.

Anyway after uploading the image size ca 3.1GB i've tried to download it. Besides getting no indication, apache starts to hog all available memory:

Tasks: 323 total,   2 running, 321 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.5%us,  1.4%sy,  0.0%ni, 59.4%id, 38.3%wa,  0.2%hi,  0.1%si,  0.0%st
Mem:   8194076k total,  8148524k used,    45552k free,     1776k buffers
Swap: 10432504k total,  7507280k used,  2925224k free,    39796k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
32313 www-data  20   0  247m 110m  516 D    6  1.4   1:41.08 ruby1.8
32273 www-data  20   0 20.6g 7.0g  464 S    4 90.0   0:48.87 apache2
  116 root      20   0     0    0    0 D    2  0.0   2:06.45 kswapd0
  391 root      20   0     0    0    0 S    1  0.0   2:06.29 kdmflush
 1154 root      20   0  363m  33m 1668 D    1  0.4  48:24.54 Xorg
    7 root      20   0     0    0    0 S    0  0.0   0:04.19 ksoftirqd/1
   10 root      20   0     0    0    0 S    0  0.0   0:46.10 ksoftirqd/2
   73 root      20   0     0    0    0 R    0  0.0   0:32.09 kblockd/2
  884 root      20   0     0    0    0 S    0  0.0   3:24.54 flush-252:0
 1097 jenkins   20   0 2648m  94m 1624 S    0  1.2 251:13.90 java

I haven't managed to be patient enough (>10min) to wait for the "save file to" dialog, but never the less i think this is a problem. Anything I can do about it?

Here is my redmine information foo:

Redmine 2.0.2.stable

Default administrator account changed    
Attachments directory writable    
Plugin assets directory writable    
RMagick available (optional)    

Environment:
  Redmine version                          2.0.2.stable
  Ruby version                             1.8.7 (x86_64-linux)
  Rails version                            3.2.5
  Environment                              production
  Database adapter                         MySQL
Redmine plugins:
  redmine_mylyn_connector                  2.8.1.stable