Work: Labs, servers and desktops
about 100 systems
   6 Alpha Mandrake on all(not sure what version)
   8 Sparc/UltraSparc RH6.2
  86 Intel
    25 RH7.2/W2K/Win98SE (triple boot)
    25 RH7.0/Win98SE (dual boot)
    25 RH6.2/Win98SE (dual boot)
    11 Servers based on RedHat 5.1-7.2

2 RS/6000 B80's running Linux as App serv's
2 RS/6000 S7A & H80 running AIX, Linux installed seperately can be booted to it

The AIX was re-installed mainly cause Oracle had difficulties on the RS/6000 running Linux

Home:
Recently unloaded 6 systems to other people, still have

2 - AMD Athlon 1.4GHz 512MB RedHat7.2/W2K dual boot
1 - P3-500MHz 256MB RedHat7.2/Win98SE dual boot
1 - P2-300Mhz 256MB Redhat7.2 samba storage server
1 - Dual P-133Mhz 192MB Redhat7.2 ... blah blah
1 - Dual P-100Mhz 128MHz Novell 5.1/Redhat6.2 dual boot

Managed side work:
About 20 systems all various Distro's various speeds