622449 - Firefox 4.0 Beta 8 Pluginreg.dat balloons in size when disabling / enabling plugins

Status: RESOLVED DUPLICATE of bug 620114

(Core Graveyard :: Plug-ins, defect)

Description

[Danial Horton]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 GTB7.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 GTB7.1

As the summary states, the pluginreg.dat increases in size everytime you toggle a plugin.

i only just noticed mine was at 1.6GB, and firefox was hanging when toggling a plugin.

Disabling 13 plugins saw the pluginreg increase from 17K to 700K
Re-enabling them saw them increase from 700K to 200+MB

Reproducible: Always

Steps to Reproduce:
1. Toggle plugins on and off and monitor the pluginreg.dat file size.
Actual Results:  
Pluginreg.dat increased in size every time the plugin(s) were toggled.. now i expect some increase is expected but definitely not by more than 10000x the original size

Expected Results:  
Pluginreg.dat to maintain a realistic size

Comment 1

[Danial Horton]

The bloat comes from 87MB's worth of C:\Program Files (x86)\Microsoft Silverlight\4.0.51204.0\npctrlui.dll|$
1291382606000|$ being printed under [INVALID]

Comment 2

[Danial Horton]

.....when i say 87MB's worth, i meant based on the size of the file at the time.

everytime you disable a plugin the contents of the invalid section are duplicated.

so 1 line becomes 2 lines, 2 lines becomes 4 lines, 4 lines becomes 8 lines, and so on.

this is not an issue in 3.6.x

Comment 3

[Ed Morley [:emorley]]

This bug has been fixed since beta 8 (in bug 620114) and the fix will be included in beta 9. In the meantime you could use the latest nightly, if this issue is causing you significant problems:
http://nightly.mozilla.org/